{"acronym":"oc","aspect_ratio":"16:9","updated_at":"2026-04-04T01:45:03.840+02:00","title":"OpenChaos","schedule_url":"","slug":"regional/c4/openchaos","event_last_released_at":"2025-12-11T00:00:00.000+01:00","link":"","description":"","webgen_location":"regional/c4/openchaos","logo_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4-logo.svg","images_url":"https://static.media.ccc.de/media/regional/c4/openchaos","recordings_url":"https://cdn.media.ccc.de/contributors/koeln/open_chaos","url":"https://api.media.ccc.de/public/conferences/oc","events":[{"guid":"6636c191-d2c2-4255-98e9-5ad7a656bbbe","title":"\tFreie Lizenzen","subtitle":null,"slug":"c4.openchaos.2019.07.freie-lizenzen","link":"https://c3voc.de","description":" Freie Software, Copyleft, FLA und co. - Dr. Michael Stehmann, Rechtsanwalt und Verfechter Freier Software, hält einen Vortrag rund um Free Software Lizenzen.\nNach einer kurzen Einführung in das Urheber- und Lizenzrecht erkärt Dr. Michael Stehmann - Rechtsanwalt und Verfechter Freier Software - welche Kriterien\neine Lizenz erfüllen muss, damit sie als eine Lizenz \"Freier Software\" bezeichnet werden kann.\nEr geht dabei auf die Kategorisierung von Free Software Lizenzen ein und erläutert im Zuge dessen unter anderem den Begriff \"Copyleft\".\nZudem gibt er Tipps zur Lizenzwahl und Hinweise bezüglich Compliance.\nZusätzlich dazu wird auch das Fiduciary Licence Agreement (FLA) vorgestellt als juristisches Werkzeug für Projekte.","original_language":"deu","persons":["Michael Stehmann"],"tags":["openchaos","1907","OpenChaos"],"view_count":384,"promoted":false,"date":"2019-07-25T00:00:00.000+02:00","release_date":"2019-07-26T02:00:00.000+02:00","updated_at":"2026-02-07T11:30:09.399+01:00","length":5399,"duration":5399,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1907-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1907-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1907-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1907-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2019.07.freie-lizenzen","url":"https://api.media.ccc.de/public/events/6636c191-d2c2-4255-98e9-5ad7a656bbbe","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":1225,"event_guid":"import-693a7916772f61c4c9","weight":5},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":4},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":4},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":4},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":3},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":7},{"event_id":6748,"event_guid":"b3fe7f83-cdd3-436a-91db-56c13b2aeb3a","weight":4},{"event_id":7110,"event_guid":"3e7f1444-b72c-594f-b033-d96b21c1961c","weight":5},{"event_id":7163,"event_guid":"bd38872d-c3ee-45d6-b3e9-a0da37e67d1a","weight":5},{"event_id":7236,"event_guid":"e3bdda0e-c95f-4021-8500-3718a2913352","weight":23},{"event_id":7238,"event_guid":"2f82bad2-97cb-59a2-b1da-428048e5baab","weight":5},{"event_id":7245,"event_guid":"f681a9f2-7d22-5e8a-be3c-8d4faaf15062","weight":3},{"event_id":7248,"event_guid":"0430ce77-480e-5621-898b-e00f453fbabf","weight":4},{"event_id":7254,"event_guid":"9172a6ee-4963-558f-8619-613d29c3ddc0","weight":4},{"event_id":7255,"event_guid":"265fd581-ed2b-5985-879c-0d51c45c70c8","weight":6},{"event_id":7256,"event_guid":"ccab9927-22fe-52a3-a14a-e33f5dffb485","weight":9},{"event_id":7259,"event_guid":"942a7a7e-a7d3-11e9-a2a3-2a2ae2dbcce4","weight":16},{"event_id":7264,"event_guid":"6ceb890a-a419-5fc6-bc42-3ffd7fbd73f7","weight":9},{"event_id":7798,"event_guid":"6260c933-5ab0-4c58-b335-ee419b180712","weight":13},{"event_id":7989,"event_guid":"a75f727b-b87b-4e64-a8c0-a80a20325b94","weight":5},{"event_id":8011,"event_guid":"c8dc6567-0601-4489-b38d-49f6553890b0","weight":4}]},{"guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","title":"Gigabit über zwei Drähte","subtitle":"Ein Praxisbericht zum G.fast-Ausbau bei NetCologne ","slug":"c4.openchaos.2018.08.netcologne-gfast","link":"https://c3voc.de","description":"Köln gehört zu den wenigen deutschen Städten, in denen eine sehr aktive Stadtwerke-Tochter schon früh und großflächig mit dem Glasfaserausbau begonnen hat. Seit 2006 legt NetCologne Glasfaserleitungen direkt in die Keller ihrer Kunden (Fibre to the Building, FTTB) und stellt dort kompakte VDSL2-DSLAMs auf. Über die existierende Haus-Telefonverkabelung werden bis zu 100 Mbit/s symmetrisch per VDSL in die Wohnungen gebracht. Weniger Bandbreite zu erhalten als man bezahlt ist ein exklusives Problem der FTTC-Konkurrenz (Fibre to the Curb), die auf Outdoor-DSLAMs setzt und so signifikant längere Kabelwege in die Wohnungen überbrücken muss. Die Weiterentwicklung der im Internet angebotenen Inhalte und die steigenen Nutzerzahlen fordern jedoch weiterhin eine steigende Bandbreite. Während die Bundespolitik sich darauf einigt, dass 50 Mbit/s eigentlich ein ausreichend schneller Neuland-Zugang ist, wird anderorts überlegt, wie man ein Gigabit/s über zwei Kupferdrähte übertragen kann.\nSeit Mitte des Jahres werden die ersten Kölner Testhaushalte mit G.fast ausgestattet. Die kurzen Kupfer-Kabelwege bei FTTB sind auch hier ein großer Vorteil und ermöglichen zumindest theoretisch eine Gesamtbandbreite von 1,8 Gigabit/s. Welche Besonderheiten verbergen sich hinter G.fast und welche Unterschiede gibt es zur VDSL2-Technik? Eine Antwort auf diese und weitere Fragen gibt uns der Nachrichtentechniker und Diplomingenieur Stefan Förster. Er hat die Historie der NetCologne aus erster Hand miterlebt -- seit 23 Jahren arbeitet er dort. Heute ist er als Gruppenleiter für Access- und Übertragungstechnik verantwortlich.","original_language":"deu","persons":["Stefan 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sicherer Zufall","subtitle":"","slug":"c4.openchaos.2015.07.kryptographisch-sicherer-zufall","link":"","description":"RSA- und PGP-Verschlüsselung sind einfach angreifbar, wenn benutzte Zufallszahlen vorhergesehen werden können. Gute Zufallszahlen sind schwierig zu erzeugen. Dual_EC_DRBG - ein standardisiertes Verfahren (NIST SP 800-90A) - wurde wohlmöglich von der NSA manipuliert.\r\n\r\nVerfahren für E-Mail und WWW-Verschlüsselung verwenden Zufallszahlen, um immer wieder neue Schlüssel zu erstellen. Diese werden beispielsweise für jeden Website-Aufruf immer wieder neu erzeugt. Langlebige Schlüsselpaare - wie bei GnuPG / PGP zur Verschlüsselung von E-Mails oder Dateien - werden ebenfalls mit Zufallszahlen erstellt. Gelingt es, Zufallszahlen vorherzuberechnen können private Schlüssel geknackt und so die jeweilige Verschlüsselung gebrochen werden.\r\n\r\nSichere Zufallszahlen sind jedoch schwer zu erzeugen. Was ist überhaupt Zufall? Ist 0 ein zufälliges Bit? 1? Wie kommt guter Zufall überhaupt in den Computer? Das OpenChaos im Juli beschäftigt sich dabei mit diesen Fragen: Wie kann Zufall über analoge Schaltungen erzeugt werden? Welche Hardware gibt es? Wie lässt sich die Sicherheit algorithmischer Verfahren beweisen? Und was ging eigentlich bei Dual_EC_DRBG schief?","original_language":"eng","persons":["yanosz","Simon Schneider"],"tags":["Zufallszahlen","Kryptographie","C4","Open Chaos"],"view_count":12056,"promoted":false,"date":"2015-07-30T20:00:00.000+02:00","release_date":"2015-08-02T02:00:00.000+02:00","updated_at":"2026-02-27T23:45:10.745+01:00","length":10465,"duration":10465,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2015.07.kryptographisch-sicherer-zufall.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2015.07.kryptographisch-sicherer-zufall_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/746c83c2-b29b-41e7-be5b-fafdfe923a5a-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/746c83c2-b29b-41e7-be5b-fafdfe923a5a-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2015.07.kryptographisch-sicherer-zufall","url":"https://api.media.ccc.de/public/events/746c83c2-b29b-41e7-be5b-fafdfe923a5a","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":14},{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":10},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":11},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":25},{"event_id":2449,"event_guid":"cd793876-8f18-46cf-a28e-304e290ca3fd","weight":4},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":28},{"event_id":2705,"event_guid":"55fccc39-c1bb-4d05-aa95-7188ad229f56","weight":9},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":25},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":17},{"event_id":3034,"event_guid":"6e3c061e-495f-450b-ba96-c777c8669458","weight":5},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":9},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":16},{"event_id":3615,"event_guid":"74783236-46f4-493c-9574-1b27a44847b7","weight":6},{"event_id":3640,"event_guid":"700a07e7-a9c4-437b-a4c5-4491b23a9b4a","weight":9},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":29},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":23},{"event_id":3851,"event_guid":"a2b0d408-3f34-11e7-a2ff-b7e0ed5cc95f","weight":4},{"event_id":3853,"event_guid":"efeeaebc-3f29-11e7-9ba7-2f214305c877","weight":6},{"event_id":3955,"event_guid":"b71b550a-e3a7-449d-a68d-7fce348d0a4b","weight":4},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":14},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":21},{"event_id":4759,"event_guid":"119d0188-df86-11e7-a509-670931c02efc","weight":7},{"event_id":4760,"event_guid":"b14c9516-d104-465e-8c7c-b2eae5d31f5a","weight":12},{"event_id":4762,"event_guid":"b036385c-ec1a-44e5-ae48-af703ce9b5d3","weight":4},{"event_id":4767,"event_guid":"f2ca3661-30c8-476e-9d6b-920bb20b21eb","weight":8},{"event_id":4826,"event_guid":"16645200-2036-4a3c-a44d-a5ff44ac2991","weight":4},{"event_id":4840,"event_guid":"21127aeb-fe1f-4506-a3f0-d747e20419a5","weight":4},{"event_id":4866,"event_guid":"117a52b4-f675-49dd-aafe-659c07b6bc9c","weight":4},{"event_id":4876,"event_guid":"dec6a7e0-2651-4bb5-8300-977795e901ed","weight":4},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":5},{"event_id":5056,"event_guid":"c0b4ff7f-7746-4d69-8d0f-b46a4be6a501","weight":4},{"event_id":5252,"event_guid":"7805cae2-d664-441a-af87-555a2c5633a2","weight":10},{"event_id":5521,"event_guid":"c3dbbb23-45de-421a-89bf-74ba5f0607e8","weight":5},{"event_id":5569,"event_guid":"d37bc91e-f1dd-4fbb-b793-c08b2436eecb","weight":6},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":29},{"event_id":5722,"event_guid":"906c5611-7e85-4593-8a4e-b33dedfce19e","weight":8},{"event_id":5832,"event_guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","weight":12},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":19},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":25},{"event_id":7236,"event_guid":"e3bdda0e-c95f-4021-8500-3718a2913352","weight":14},{"event_id":7245,"event_guid":"f681a9f2-7d22-5e8a-be3c-8d4faaf15062","weight":4}]},{"guid":"e751ba39-32d6-49c0-8d97-5acaa44a5fa7","title":"PsyLink","subtitle":"Controlling computers with nerve signals","slug":"c4.openchaos.2025.01.psylink","link":"https://c3voc.de","description":"PsyLink is an open source electrode armband that measures electric signals on the skin and turns them into computer inputs.\n\nThe talk discusses why neural interfaces are an important but also tricky subject, and explains how PsyLink turns nerve impulses into keyboard inputs - 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Wir werden nicht nur die technische Seite beleuchten, sondern auch einen Blick in die Zukunft werfen: Was kann KI in den kommenden Jahren für unsere Gesellschaft leisten?","original_language":"deu","persons":["shorty"],"tags":["openchaos","2406","2024","OpenChaos"],"view_count":1382,"promoted":false,"date":"2024-06-27T20:00:00.000+02:00","release_date":"2024-06-30T00:00:00.000+02:00","updated_at":"2026-04-01T15:15:07.658+02:00","length":4695,"duration":4695,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2406-6660d36a-58a2-434c-960b-32798b03516f.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2406-6660d36a-58a2-434c-960b-32798b03516f_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2406-6660d36a-58a2-434c-960b-32798b03516f.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2406-6660d36a-58a2-434c-960b-32798b03516f.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2024.06.kuenstliche-intelligenz","url":"https://api.media.ccc.de/public/events/6660d36a-58a2-434c-960b-32798b03516f","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[]},{"guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","title":"Rust","subtitle":"Eine moderne Systemprogrammiersprache","slug":"c4.openchaos.2015.05.rust","link":"https://koeln.ccc.de/updates/2015-05-28_OC_Rust.xml","description":"Das OpenChaos im Monat Mai beschäftigt sich mit der Programmiersprache Rust. Einer modernen Programmiersprache, welche sich an dem Dreiklang aus Geschwindigkeit, Speichersicherheit und Threadsicherheit versucht.\r\nNach langjähriger Entwicklung hat das Rust Projekt Version 1.0 der Programmiersprache veröffentlicht. Damit einher geht zum ersten Mal die Garantie auf Vorwärtskompatibilität von Sprache sowie Standardbibliothek.\r\nRust versucht sowohl Speicherzugriffsfehler, als auch Wettlaufsituationen auszuschließen, ohne dabei gegenüber existierenden Systemprogrammiersprachen an Geschwindigkeit einzubüßen. Zudem bringt es einige Funktionalität moderner Programmiersprachen, wie Iteratoren, pattern matching und algebraische Datentypen mit, welche bisher bei der Systemprogrammierung selten zur Verfügung standen.\r\nDer etwa einstündige Vortrag gibt eine kurze Einführung in die Grundlagen von Rust und konzentriert sich dabei vor allem auf die Eigenheiten des Typsystems.","original_language":"eng","persons":["Florob"],"tags":["Rust","Open Chaos","C4"],"view_count":1614,"promoted":false,"date":"2015-05-28T20:15:00.000+02:00","release_date":"2015-06-01T02:00:00.000+02:00","updated_at":"2026-03-29T17:45:05.546+02:00","length":3634,"duration":3634,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2015.05-rust.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2015.05-rust_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/25d1ba3b-cf21-4d83-935d-d064f10a6035-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/25d1ba3b-cf21-4d83-935d-d064f10a6035-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2015.05.rust","url":"https://api.media.ccc.de/public/events/25d1ba3b-cf21-4d83-935d-d064f10a6035","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":14},{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":8},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":8},{"event_id":2313,"event_guid":"33ee0291-6c0b-4253-9e4b-1bc4d382c04e","weight":8},{"event_id":2447,"event_guid":"f7baee00-59a0-41ee-83e1-f89c05b4b13b","weight":7},{"event_id":2451,"event_guid":"746c83c2-b29b-41e7-be5b-fafdfe923a5a","weight":25},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":12},{"event_id":2735,"event_guid":"5c0323b6-c538-4fb6-8d70-d08def6bf865","weight":6},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":11},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":29},{"event_id":3034,"event_guid":"6e3c061e-495f-450b-ba96-c777c8669458","weight":14},{"event_id":3086,"event_guid":"ef662d36-01e0-48b0-96fb-a5d98957cc4b","weight":5},{"event_id":3112,"event_guid":"c01432ad-d78f-4e16-9e19-22469af9050a","weight":7},{"event_id":3236,"event_guid":"3ed24374-7c3e-4d29-a13a-a0adb06e72f9","weight":5},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":9},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":12},{"event_id":3631,"event_guid":"c5d3d09f-f024-45e3-8ed3-07d44d327e0e","weight":5},{"event_id":3635,"event_guid":"86119a7f-cd68-4355-9617-d1b96638fe82","weight":6},{"event_id":3775,"event_guid":"f854e264-4728-472e-9e57-4dad6ea3d668","weight":11},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":22},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":14},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":27},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":17},{"event_id":4706,"event_guid":"cc614df4-ff39-4475-99d5-6597e5fadc75","weight":8},{"event_id":4760,"event_guid":"b14c9516-d104-465e-8c7c-b2eae5d31f5a","weight":12},{"event_id":4866,"event_guid":"117a52b4-f675-49dd-aafe-659c07b6bc9c","weight":5},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":9},{"event_id":5064,"event_guid":"762f9a23-ca2c-4391-a725-8651eb5a0609","weight":7},{"event_id":5521,"event_guid":"c3dbbb23-45de-421a-89bf-74ba5f0607e8","weight":5},{"event_id":5569,"event_guid":"d37bc91e-f1dd-4fbb-b793-c08b2436eecb","weight":10},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":23},{"event_id":5832,"event_guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","weight":10},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":12},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":20},{"event_id":7236,"event_guid":"e3bdda0e-c95f-4021-8500-3718a2913352","weight":7}]},{"guid":"aabfb8a1-3190-49ed-969f-b74baec31a2d","title":"Der autoritäre High-Tech-Komplex und die Unterwanderung der Demokratie","subtitle":null,"slug":"c4.openchaos.2025.11.autoritaere-high-tech-komplex-unterwanderung-der-demokratie","link":"https://c3voc.de","description":"Gegenwärtig ist in den USA zu beobachten, wie einst demokratisch kontrollierte Institutionen und Vorgänge an private High-Tech Unternehmen wie Palantir, Anduril oder SpaceX ausgelagert werden. Diese Firmen übernehmen staatliche Aufgaben und übertragen Gesetze und Entscheidungen in Algorithmen, ohne dabei demokratischen Kontrollen zu unterliegen. Eine Entwicklung, die auch in Europa droht.\n\nIn der Vergangenheit war zu sehen, wie die libertären Tech-Oligarchen des Silicon Valley nach Wegen suchten, sich der staatlich demokratischen Autorität zu entziehen. Doch mit der zweiten Trump Administration ist ein Strategiewechsel zu beobachten, der darauf abzielt, die demokratischen Institutionen zu übernehmen, anstatt selbst parallele Strukturen (wie Crypto-Währungen und Hochsee-Habitate) zu errichten. Gestützt ist diese Strategie auf Technologie, Investitionen von Risikokapital in potenzielle Staatsprojekte sowie die gezielte Platzierung von Personal in wichtigen Positionen. Das Ziel: Die Privatisierung von demokratisch legitimierter staatlicher Souveränität.\n\nIn den USA ist zu sehen, wie dieser Plan erfolgreich umgesetzt wird und die Tech-Billionäre aus dem Silicon Valley immer mehr Einfluss über zentrale Regierungsstellen erhalten. Der Vortrag will diese Strategie, die konkreten Vorgehensweisen und Auswirkungen und die damit einhergehenden Verflechtungen von privaten Konzernen und demokratischen Institutionen näher beleuchten, um die geplanten und bereits umgesetzten Vorhaben in Europa besser einordnen zu können. In England wurde das Gesundheitssystem (NHS) mit Palantirs Gotham neu implementiert, Italien plant die feste Integration von Starlink in die militärische Kommunikation und in Deutschland (neben der Nutzung von Palantir bei der Polizei) wurde jüngst die strategische Partnerschaft zwischen Palmer Luckeys Rüstungsunternehmen Anduril und Rheinmetall verkündet, in der gemeinsam ein autonomes Drohensystem für die Bundeswehr entwickelt werden soll. Dabei wurden diese Entscheidungen ohne große Öffentlichkeit, ohne transparente Vergabeprozesse oder ernsthafte parlamentarische Debatten getroffen.\n\nWas bedeutet es für Demokratien, wenn ihre Institutionen wie die öffentliche Verwaltung, Sozial- und Gesundheitswesen und das Militär von privaten Unternehmen übernommen werden, deren primäres Interesse dem Gewinn ihrer Aktionäre und nicht dem Wohlergehen der Bürgerinnen und Bürger dient? Und wie sind diese Entwicklungen mit den gleichzeitigen europäischen Bemühungen um digitale Souveränität zusammenzubringen?\n\nDa Peter Thiel, die sog. 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Heim"],"tags":["openchaos","1713"],"view_count":263,"promoted":false,"date":"2017-06-17T00:00:00.000+02:00","release_date":"2017-07-06T02:00:00.000+02:00","updated_at":"2026-02-19T14:45:08.236+01:00","length":8158,"duration":8158,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1713-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1713-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/0dfdf83e-5cc3-4443-930e-fc149a84c812-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/0dfdf83e-5cc3-4443-930e-fc149a84c812-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2017.06.revision-nachlese","url":"https://api.media.ccc.de/public/events/0dfdf83e-5cc3-4443-930e-fc149a84c812","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":4},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":3},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":3},{"event_id":2447,"event_guid":"f7baee00-59a0-41ee-83e1-f89c05b4b13b","weight":4},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":8},{"event_id":3034,"event_guid":"6e3c061e-495f-450b-ba96-c777c8669458","weight":3},{"event_id":3107,"event_guid":"57ef4367-5baf-40f5-84a1-89f9f9f29b4f","weight":8},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":7},{"event_id":3671,"event_guid":"4ef69e6a-026f-4b30-888d-af654b220a3d","weight":5},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":10},{"event_id":3820,"event_guid":"f7716b25-9c12-5d69-be42-3a8fec10b2a6","weight":3},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":10},{"event_id":3955,"event_guid":"b71b550a-e3a7-449d-a68d-7fce348d0a4b","weight":6},{"event_id":3960,"event_guid":"a816ab3e-408f-5de3-81e2-da38f1a2a771","weight":3},{"event_id":3963,"event_guid":"f3fce63e-de39-5628-8725-02a461132428","weight":3},{"event_id":3969,"event_guid":"3da0c4af-8e71-491f-a9cc-206d5fd98325","weight":3},{"event_id":3991,"event_guid":"95af3d8d-795b-5dad-a06c-4a9ad2997a23","weight":4},{"event_id":4396,"event_guid":"b5188ef7-b244-48fc-826e-7603cd1d7837","weight":4},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":9},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":10},{"event_id":4706,"event_guid":"cc614df4-ff39-4475-99d5-6597e5fadc75","weight":7},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":5}]},{"guid":"858bc8fe-7bf0-4600-8372-aba6479355f6","title":"Auf der Suche nach dem verlorenen Internet","subtitle":null,"slug":"c4.openchaos.2020.01.gopherspace-mapping","link":"https://c3voc.de","description":"Gopher ist ein weitestgehend in Vergessenheit geratenes Protokoll für den Abruf\nvon Dokumenten. Es ähnelt am ehesten dem Web 1.0, jedoch verwendet es eine\nstrikt hierarchische Struktur und verzichtet bewusst auf komplexe Features wie\nMarkup, Styling und Ausführung von Skriptsprachen. Trotz des Erfolges des World\nWide Web existiert weiterhin eine Gruppe von Gopher-Enthusiasten, welche\nsogenannte Gophersites betreiben.\n\nIn diesem Vortrag wird eine kurze Einführung in das Gopher-Protokoll gegeben\nund anschließend gezeigt wie das komplette IPv4-Netz nach Gopher-Services\ndurchsucht und die gewonnenen Daten einer Analyse unterzogen wurden. Mithilfe\ndieser Daten wird versucht zu beantworten wer genau auf Port 70 lauscht und\nwelche Inhalte heutzutage angeboten werden.","original_language":"deu","persons":["Vasilij \"wasamasa\" Schneidermann"],"tags":["openchaos","2001","2020","OpenChaos"],"view_count":3337,"promoted":false,"date":"2020-01-30T20:00:00.000+01:00","release_date":"2020-01-31T00:00:00.000+01:00","updated_at":"2026-03-28T20:45:06.124+01:00","length":2862,"duration":2862,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2001-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2001-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2001-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2001-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2020.01.gopherspace-mapping","url":"https://api.media.ccc.de/public/events/858bc8fe-7bf0-4600-8372-aba6479355f6","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[]},{"guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","title":"dehydrated","subtitle":"","slug":"c4.openchaos.2016.09.dehydrated","link":"https://koeln.ccc.de/updates/2016-09-29_OC-ACME.xml","description":"\u003cp\u003e\u003cspan style=\"font-size: 0.8em;\"\u003eLet's Encrypt bietet jedem die M\u0026ouml;glichkeit, automatisierbar und kostenlos TLS-Zertifikate auszustelle \u003c/span\u003e\u003c/p\u003e\r\n\u003cp\u003eDurch das offene ACME-Protokoll, welches \u003ca href=\"https://letsencrypt.org\"\u003eLet's Encrypt\u003c/a\u003e benutzt und in diesem Vortrag vorgestelllt wird, ist es dabei jedem m\u0026ouml;glich, seinen eigenen Client zu schreiben.\u003c/p\u003e\r\n\u003cp\u003eDieser Vortrag stellt den von Lukas geschriebenen Client \u003ca href=\"https://github.com/lukas2511/dehydrated\"\u003edehydrated\u003c/a\u003e (ehemals letsencrypt.sh) vor.\u003c/p\u003e","original_language":"deu","persons":["Lukas Schauer"],"tags":["Open Chaos","C4","ACME","Let's Encrypt","dehydrated"],"view_count":631,"promoted":false,"date":"2016-09-29T20:00:00.000+02:00","release_date":"2016-09-30T02:00:00.000+02:00","updated_at":"2026-03-03T10:30:07.670+01:00","length":1856,"duration":1856,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2016.09.dehydrated.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2016.09.dehydrated_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/cec35be5-a1f0-496b-82c9-c7ace338b50e-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/cec35be5-a1f0-496b-82c9-c7ace338b50e-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2016.09.dehydrated","url":"https://api.media.ccc.de/public/events/cec35be5-a1f0-496b-82c9-c7ace338b50e","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":15},{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":7},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":8},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":9},{"event_id":2451,"event_guid":"746c83c2-b29b-41e7-be5b-fafdfe923a5a","weight":9},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":12},{"event_id":2705,"event_guid":"55fccc39-c1bb-4d05-aa95-7188ad229f56","weight":5},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":6},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":27},{"event_id":3034,"event_guid":"6e3c061e-495f-450b-ba96-c777c8669458","weight":14},{"event_id":3107,"event_guid":"57ef4367-5baf-40f5-84a1-89f9f9f29b4f","weight":7},{"event_id":3393,"event_guid":"095b3c67-9dd1-4e16-846d-c3c44fe3a092","weight":5},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":21},{"event_id":3615,"event_guid":"74783236-46f4-493c-9574-1b27a44847b7","weight":5},{"event_id":3640,"event_guid":"700a07e7-a9c4-437b-a4c5-4491b23a9b4a","weight":6},{"event_id":3671,"event_guid":"4ef69e6a-026f-4b30-888d-af654b220a3d","weight":5},{"event_id":3775,"event_guid":"f854e264-4728-472e-9e57-4dad6ea3d668","weight":12},{"event_id":3782,"event_guid":"dec1ddb6-e4f3-11e6-ba49-a38509dc3679","weight":5},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":19},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":18},{"event_id":3988,"event_guid":"0dfdf83e-5cc3-4443-930e-fc149a84c812","weight":7},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":12},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":17},{"event_id":4706,"event_guid":"cc614df4-ff39-4475-99d5-6597e5fadc75","weight":8},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":10},{"event_id":5252,"event_guid":"7805cae2-d664-441a-af87-555a2c5633a2","weight":15},{"event_id":5569,"event_guid":"d37bc91e-f1dd-4fbb-b793-c08b2436eecb","weight":9},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":12},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":14}]},{"guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","title":"Sie haben das Recht zu Schweigen","subtitle":null,"slug":"c4.openchaos.2018.09.sie-haben-das-recht-zu-schweigen","link":"https://c3voc.de","description":"\"Und die deutlichen Beweise warn zehn leere Flaschen Wein. Und zehn leere Flaschen können schnell zehn Mollis sein.\"\nSangen Ton, Steine, Scherben seinerzeit von den vermeintlichen Beweisen für Springers heisses Blatt, so können heute ein paar falsche Klicks oder eine Bankverbindung vielleicht zu einem Verdacht führen. Und wenn der erst mal in die falsche Richtung läuft, dann kann das bis zur Beschlagnahmung von Rechnern, Datenträgern und Smartphones und sonstigem führen.\n\nSo überraschend geschehen im Juli diesen Jahres im Zusammenhang mit dem Aufruf zur Blockade des AfD-Bundesparteitags. Über Tor führe die Spur u.a. zum CCC in Augsburg. Und plötzlich wurde auch privates Sportgerät beschlagnahmt. Auch wenn nachträglich die Hausdurchsuchung von Gerichten wieder eingesackt wurde, so war der Schlamassel erst mal da und das Geschrei groß.\n\nSein Vortrag \"Sie haben das Recht zu Schweigen\" vom 23C3 ist mittlerweile fast 12 Jahre alt. Zeit für Updates.","original_language":"deu","persons":["Udo 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In den Bereichen Lehre und Forschung hat sich der Lisp-Dialekt Scheme als besonders geeignet herausgestellt f\u0026uuml;r welchen zahlreiche Implementierungen existieren; jedoch ist die Umsetzung eines eigenen Scheme-Interpreters bei weitem nicht trivial.\u003c/p\u003e\r\n\u003cp\u003eDas MAL-Projekt versucht diese L\u0026uuml;cke zu f\u0026uuml;llen indem es eine vereinfachte, aber dennoch n\u0026uuml;tzliche Sprache beschreibt und den Programmierer mithilfe eines Guides sowie einem TDD-inspirierten Testger\u0026uuml;st durch die einzelnen Stufen des Interpreters f\u0026uuml;hrt. Weitere Informationen zu MAL k\u0026ouml;nnen im \u003ca href=\"https://github.com/kanaka/mal\"\u003ekanaka/mal Projekt auf GitHub\u003c/a\u003e gefunden werden.\u003c/p\u003e","original_language":"deu","persons":["Vasilij “wasamasa” Schneidermann"],"tags":["openchaos","1701","Lisp","MAL"],"view_count":590,"promoted":false,"date":"2017-01-26T20:15:00.000+01:00","release_date":"2017-01-27T01:00:00.000+01:00","updated_at":"2026-03-17T23:45:03.683+01:00","length":4327,"duration":4327,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1701-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1701-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/f854e264-4728-472e-9e57-4dad6ea3d668-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/f854e264-4728-472e-9e57-4dad6ea3d668-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2017.01.make-a-lisp","url":"https://api.media.ccc.de/public/events/f854e264-4728-472e-9e57-4dad6ea3d668","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":363,"event_guid":"import-480b18cc8c732095d8","weight":4},{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":9},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":4},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":11},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":11},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":4},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":11},{"event_id":3034,"event_guid":"6e3c061e-495f-450b-ba96-c777c8669458","weight":13},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":12},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":10},{"event_id":3615,"event_guid":"74783236-46f4-493c-9574-1b27a44847b7","weight":4},{"event_id":3640,"event_guid":"700a07e7-a9c4-437b-a4c5-4491b23a9b4a","weight":9},{"event_id":3689,"event_guid":"1f7eb981-2819-4824-8f40-4ddde0be7bf3","weight":6},{"event_id":3698,"event_guid":"994082de-ef8e-4f8e-8c46-ec0eb110b845","weight":4},{"event_id":3782,"event_guid":"dec1ddb6-e4f3-11e6-ba49-a38509dc3679","weight":11},{"event_id":3784,"event_guid":"454751e0-fd42-11e6-b7aa-174b5fe37b07","weight":5},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":12},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":10},{"event_id":3955,"event_guid":"b71b550a-e3a7-449d-a68d-7fce348d0a4b","weight":9},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":10},{"event_id":4706,"event_guid":"cc614df4-ff39-4475-99d5-6597e5fadc75","weight":10},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":13},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":4},{"event_id":6748,"event_guid":"b3fe7f83-cdd3-436a-91db-56c13b2aeb3a","weight":5}]},{"guid":"52c97a51-9131-4d16-91c9-db93e39a4837","title":"Digitalisierung des Gesundheitswesens","subtitle":"vom E-Rezept zur ePA für alle","slug":"c4.openchaos.2024.07.digitalisierung-gesundheitswesen","link":"https://c3voc.de","description":"In dieser technisch eher tiefergehenden Einführung werden wir die grundlegenden Fragen klären:\n\nWas passiert gerade in der Digitalisierung des Gesundheitswesens?\nWarum brauchen E-Rezepte manchmal so lange, obwohl sie digital sind?\nWie wird eigentlich die sogenannte elektronische Patientenakte (ePA) für alle funktionieren?\nWas passiert technisch in der Digitalisierung des Gesundheitswesens in der Zukunft?\nUnd was hat das alles mit vertrauenswürdigen Umgebungen zu tun?\n\nNach der Einführung des E-Rezepts im Januar 2024 soll Anfang 2025 das digitale Gesundheitswesen in Deutschland so richtig durchstarten – mit der Einführung der ePA für alle, die nicht den Opt-out wählen. Wir geben Ausblick über den aktuellen Stand der technischen Umsetzung, der Architektur dahinter und der Frage, ob das wirklich eine patient*innenzentrierte Akte sein kann.\n\nSlides sind unter https://bkastl.de/cccc24/ verfügbar.","original_language":"deu","persons":["Bianca Kastl"],"tags":["openchaos","2407","2024","OpenChaos"],"view_count":1659,"promoted":false,"date":"2024-07-25T20:20:00.000+02:00","release_date":"2024-07-27T00:00:00.000+02:00","updated_at":"2026-03-25T16:30:05.244+01:00","length":5872,"duration":5872,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2407-52c97a51-9131-4d16-91c9-db93e39a4837.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2407-52c97a51-9131-4d16-91c9-db93e39a4837_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2407-52c97a51-9131-4d16-91c9-db93e39a4837.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2407-52c97a51-9131-4d16-91c9-db93e39a4837.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2024.07.digitalisierung-gesundheitswesen","url":"https://api.media.ccc.de/public/events/52c97a51-9131-4d16-91c9-db93e39a4837","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[]},{"guid":"ca68a158-717c-4626-9fad-783b091e9302","title":"The EU copyright reform","subtitle":null,"slug":"c4.openchaos.2019.02.eu-copyright-reform","link":"https://c3voc.de","description":"Copyright reform threatens fundamental rights, both offline and online. Cologne already has had substantial street protests against it, especially the uploadfilters in the proposal. 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Betrachtet man die E-Card, die sogenannte „elektronische Gesundheitskarte“ als Schlüssel, dann bildet die Telematik die Schließanlage, hinter der später einmal die Gesamtheit der deutschen Gesundheitsdaten aufbewahrt werden soll. Gegenwärtig dient die Telematik in den Arztpraxen jedoch nur zur Schlüsselüberprüfung. Zu mehr taugt das aktuelle System des „Stammdatenabgleichs“ nicht. Die Pläne von elektronischen Arztbriefen, elektronischen Rezepten oder telemetrischem Arzt-Patientenkontakt waren schon immer ein bisschen ambitioniert, jetzt sind sie, durch die DSGVO, zur Utopie geworden. Die irritierende Gegenläufigkeit, des in der Öffentlichkeit als belastend empfundenen Schutzgesetzes, bei gleichzeitig geräuschloser Umsetzung einer kritischen Technologie (der es jedoch an Alltagstauglichkeit mangelt) trägt eine bizarre Ambivalenz in die Diskussion um diese Zusammenhänge.","original_language":"deu","persons":["Dr. Stefan Streit"],"tags":["openchaos","1807","OpenChaos"],"view_count":1759,"promoted":false,"date":"2018-07-26T00:00:00.000+02:00","release_date":"2018-07-27T02:00:00.000+02:00","updated_at":"2026-03-03T12:00:09.480+01:00","length":3763,"duration":3763,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1807-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1807-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/906c5611-7e85-4593-8a4e-b33dedfce19e-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/906c5611-7e85-4593-8a4e-b33dedfce19e-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2018.07.telematik-und-dsgvo-in-der-artzpraxis","url":"https://api.media.ccc.de/public/events/906c5611-7e85-4593-8a4e-b33dedfce19e","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2451,"event_guid":"746c83c2-b29b-41e7-be5b-fafdfe923a5a","weight":8},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":8},{"event_id":2923,"event_guid":"ba780105-8cc1-4e6e-8552-5e3bc150b9ff","weight":8},{"event_id":2938,"event_guid":"03c8501f-d327-4228-a9fe-2635370d25d2","weight":1},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":6},{"event_id":3482,"event_guid":"420d4364-a10e-49ec-aa95-387bd5334aa4","weight":7},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":3},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":6},{"event_id":3615,"event_guid":"74783236-46f4-493c-9574-1b27a44847b7","weight":11},{"event_id":3763,"event_guid":"8fbee7ff-b50c-4310-af9d-d44794669f25","weight":2},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":12},{"event_id":3853,"event_guid":"efeeaebc-3f29-11e7-9ba7-2f214305c877","weight":7},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":7},{"event_id":4700,"event_guid":"aadf222c-3ded-49b4-b80e-5a36e17d5dcb","weight":1},{"event_id":4760,"event_guid":"b14c9516-d104-465e-8c7c-b2eae5d31f5a","weight":1},{"event_id":4762,"event_guid":"b036385c-ec1a-44e5-ae48-af703ce9b5d3","weight":2},{"event_id":4763,"event_guid":"2ef3b60f-6e5c-4c23-a145-d263685ec13e","weight":1},{"event_id":4795,"event_guid":"722ce759-9cde-4e3b-8db5-5a97aa9673d9","weight":2},{"event_id":4808,"event_guid":"acab4111-aba7-44f7-b56e-ef805dcacd00","weight":1},{"event_id":4935,"event_guid":"947f946e-3dd9-4911-b4de-f9bbd87058ee","weight":2},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":7},{"event_id":5064,"event_guid":"762f9a23-ca2c-4391-a725-8651eb5a0609","weight":6},{"event_id":5065,"event_guid":"b13b7d07-a781-4777-ac11-c331a204e710","weight":4},{"event_id":5252,"event_guid":"7805cae2-d664-441a-af87-555a2c5633a2","weight":13},{"event_id":5275,"event_guid":"27267d09-859b-4ebf-a779-63145861c816","weight":7},{"event_id":5304,"event_guid":"4857565a-504b-2020-2020-202020202020","weight":1},{"event_id":5310,"event_guid":"43425a39-5a33-2020-2020-202020202020","weight":1},{"event_id":5350,"event_guid":"47b7888b-3379-53e2-b2c8-6b004ae00550","weight":1},{"event_id":5370,"event_guid":"ea068ddc-aef6-5367-ba79-cd90ddbf8353","weight":6},{"event_id":5377,"event_guid":"412d3bab-a67c-589a-9c70-8bb128ab560e","weight":1},{"event_id":5378,"event_guid":"379ee1b1-ef9a-5572-8e9d-4c9d365278b4","weight":1},{"event_id":5380,"event_guid":"acc35999-4707-5ef9-a8af-f3b197f09704","weight":185},{"event_id":5385,"event_guid":"1203a77c-a01a-5a44-9282-d4c988205853","weight":1},{"event_id":5388,"event_guid":"98391d79-4f04-5043-966b-25e33ce1bc37","weight":1},{"event_id":5521,"event_guid":"c3dbbb23-45de-421a-89bf-74ba5f0607e8","weight":12},{"event_id":5569,"event_guid":"d37bc91e-f1dd-4fbb-b793-c08b2436eecb","weight":27},{"event_id":5637,"event_guid":"d9898c2f-fd78-4d04-b5d3-683df6895fa3","weight":1},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":15},{"event_id":5658,"event_guid":"456fb60c-5ce7-11e8-be47-1fb2912eb890","weight":3},{"event_id":5707,"event_guid":"37a90809-5147-5662-bbce-c669c810fec9","weight":2},{"event_id":5709,"event_guid":"cbe1f8bd-13bb-5ff3-965f-c1e5e2c2abd8","weight":11},{"event_id":5718,"event_guid":"48e8a944-fc0e-596f-a96c-2b41488487c1","weight":1},{"event_id":5723,"event_guid":"224592ec-929c-11e8-b455-93e846fe9ece","weight":13},{"event_id":5725,"event_guid":"818ca242-94ac-11e8-911a-2b64394d438f","weight":12},{"event_id":5726,"event_guid":"699d4df8-182e-11e8-a51e-1766dd9762f3","weight":8},{"event_id":5727,"event_guid":"702996dd-0853-4d00-81e2-3e39cae19500","weight":10},{"event_id":5830,"event_guid":"1f3a0237-0515-4cdb-90ac-d57f7bc85586","weight":7},{"event_id":5831,"event_guid":"5fa9fb17-3bb5-43c2-9ef9-3ed9db1c957a","weight":6},{"event_id":5832,"event_guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","weight":27},{"event_id":5970,"event_guid":"8c8cf5d2-d609-5466-9b88-a29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2025 Nachlese","subtitle":null,"slug":"c4.openchaos.2025.09.evoke-2025-nachlese","link":"https://c3voc.de","description":"Der Sommer war laut und bunt, denn vom 15. bis 17. August fand wieder die Evoke statt, eine der traditionsreichsten Demopartys und ein fester Treffpunkt der Demoszene seit über zwei Jahrzehnten.\n\nWer dabei war, weiß, wovon hier die Rede ist. Wer nicht dabei war – kein Problem. Beim OpenChaos gibt es die Gelegenheit, die besten Beiträge der Evoke noch einmal zu erleben.\n\nTobi vom Digitale Kultur e.V. zeigt eine Auswahl der (subjektiv) besten und schönsten Demos und Intros der Evoke 2025 – von PC bis C64, von abstrakt bis verspielt, von winzig bis opulent. Dazu gibt’s wie immer Hintergrundinfos, Geschichten von vor und hinter der Bühne und Einblicke in die Demoszene.\n\nOb langjähriger Scener oder neugierige Besucherin: Komm vorbei, schau rein, hab einen großartigen Abend und sieh, was passiert, wenn Maschinen zum Ventil für Kreativität werden.\n\nLicensed to the public under https://creativecommons.org/licenses/by-sa/4.0/","original_language":"deu","persons":["Tobias Heim"],"tags":["2509","2025","openchaos","OpenChaos","c4","openchaos-deu","cccc","koeln"],"view_count":667,"promoted":false,"date":"2025-09-25T20:00:00.000+02:00","release_date":"2025-11-06T00:00:00.000+01:00","updated_at":"2026-04-04T01:45:03.835+02:00","length":6483,"duration":6483,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2509-2571e22f-7fcc-4a5e-b80b-23d17f10a404.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2509-2571e22f-7fcc-4a5e-b80b-23d17f10a404_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2509-2571e22f-7fcc-4a5e-b80b-23d17f10a404.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2509-2571e22f-7fcc-4a5e-b80b-23d17f10a404.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2025.09.evoke-2025-nachlese","url":"https://api.media.ccc.de/public/events/2571e22f-7fcc-4a5e-b80b-23d17f10a404","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[]},{"guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","title":"Extreme Wetterereignisse in Europa","subtitle":"Wie entstehen Winter- und Sommerstürme?","slug":"c4.openchaos.2016.10.extreme-wetterereignisse-in-europa","link":"https://koeln.ccc.de/updates/2016-10-21_OC-Wetter.xml","description":"\u003cp\u003e\u003cspan style=\"font-size: 0.8em;\"\u003eIm Sommer als auch im Winter k\u0026ouml;nnen starke Windb\u0026ouml;en auftreten. Zun\u0026auml;chst w\u0026uuml;rden wir vielleicht denken, dass immer die gleichen atmosph\u0026auml;rischen Mechanismen f\u0026uuml;r die Entstehung von starken Winden verantwortlich sind. Das ist aber nicht der Fall \u003c/span\u003e\u003c/p\u003e\r\n\u003cp\u003eZum OpenChaos im Oktober geben wir einen einen \u0026Uuml;berlick \u0026uuml;ber faszinierende Zusammenh\u0026auml;nge:\u003c/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eWie kommt es zu St\u0026uuml;rmen im Sommer und im Winter?\u003c/li\u003e\r\n\u003cli\u003eWo liegen die Unterschiede zu Fr\u0026uuml;hling und Herbst?\u003c/li\u003e\r\n\u003c/ul\u003e\r\n\u003cp\u003eDer Vortrag f\u0026uuml;hrt dabei in interessante meteorologische Details ein:\u003c/p\u003e\r\n\u003cp\u003eWinterst\u0026uuml;rme entstehen durch starke Temperaturunterschiede zwischen der Arktis und den mittleren Breiten. Dadurch bilden sich in der H\u0026ouml;he starke Winde und in Bodenn\u0026auml;he gro\u0026szlig;e Luftdruckunterschiede aus. Die Atmosph\u0026auml;re generiert bei bestimmten Wetterlagen starke Tiefdruckgebiete, die Orkanb\u0026ouml;en mit sich bringen k\u0026ouml;nnen. Als Beispiel wird das Auftreten von Kyrill im Januar 2007 beschrieben.\u003c/p\u003e\r\n\u003cp\u003eIm Sommer existieren allerdings keine starken Temperaturgegens\u0026auml;tze zwischen dem Norden und S\u0026uuml;den. Starke B\u0026ouml;en werden zu dieser Jahreszeit durch organisierte Wolkensysteme und starke Gewitter ausgel\u0026ouml;st. Diese hochreichenden Wolken bilden starke Abwinde (sog. Downdrafts) aus. Warm-feuchte Luftmassen in der Grenzschicht, eine instabile mittlere Troposph\u0026auml;re und eine vertikale Windscherung stellen die notwendigen Zutaten f\u0026uuml;r die Organisation von solchen Wolkensystemen dar. Das Pfingstunwetter in Nordrhein-Westphalen des Jahres 2014 ist ein extremes Beispiel f\u0026uuml;r einen Sommersturm.\u003c/p\u003e","original_language":"deu","persons":["Volker 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35C3 CTF Nokia phone challenge","subtitle":null,"slug":"c4.openchaos.2019.04.the-35c3-ctf-nokia-phone-challenge","link":"https://c3voc.de","description":"Every year, the German CTF Team \"Eat Sleep Pwn Repeat\" sets out to organize the C3 CTF.\nWe always try to come up with new and novel challenges which are related to real life things you may encounter as a hacker:\nBrowsers, Hypervisors, Operating Systems, Mobile phones etc.\nAndy always wanted to build a proper GSM based mobile phone as part of such a challenge.\nThanks to the osmocom project which provided all the necessary protocol stack implementations, this was finally possible.\nThis talk will guide you through how GSM works, how he built the phone and what the bugs were he planted in the challenge for the teams to find and exploit.","original_language":"eng","persons":["Andreas Galauner"],"tags":["openchaos","1904","OpenChaos"],"view_count":1061,"promoted":false,"date":"2019-04-25T00:00:00.000+02:00","release_date":"2019-04-28T02:00:00.000+02:00","updated_at":"2026-02-15T22:30:12.584+01:00","length":4528,"duration":4528,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1904-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1904-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1904-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1904-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2019.04.the-35c3-ctf-nokia-phone-challenge","url":"https://api.media.ccc.de/public/events/c127467f-82bf-4896-b473-cd81bf055fc5","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":1952,"event_guid":"e7ca6d029c833227","weight":2},{"event_id":2451,"event_guid":"746c83c2-b29b-41e7-be5b-fafdfe923a5a","weight":1},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":4},{"event_id":2827,"event_guid":"f79c744f-30d1-4175-a173-2e760049337d","weight":1},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":1},{"event_id":3640,"event_guid":"700a07e7-a9c4-437b-a4c5-4491b23a9b4a","weight":4},{"event_id":3695,"event_guid":"c300b194-2a85-4705-92aa-b4e789882303","weight":1},{"event_id":3775,"event_guid":"f854e264-4728-472e-9e57-4dad6ea3d668","weight":1},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":1},{"event_id":4909,"event_guid":"03ba9edb-1d3a-4774-9384-7548c0696df7","weight":3},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":5},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":18},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":4},{"event_id":6461,"event_guid":"f42631ca-d3ec-5baf-8642-85c0b1cadc89","weight":3},{"event_id":6474,"event_guid":"f58a2b6d-bde0-483b-a8db-043ea9371cb6","weight":3},{"event_id":6748,"event_guid":"b3fe7f83-cdd3-436a-91db-56c13b2aeb3a","weight":5},{"event_id":6879,"event_guid":"ca68a158-717c-4626-9fad-783b091e9302","weight":5},{"event_id":6919,"event_guid":"5cd6ffce-5896-56a9-ab7b-e72d18d54482","weight":1},{"event_id":6922,"event_guid":"3d497cb1-ee6a-5ea8-bd1b-c65d7f1d7cb1","weight":1},{"event_id":6926,"event_guid":"e51e5695-68c6-52f8-828b-472a204ffaec","weight":4},{"event_id":6929,"event_guid":"76f25555-9427-5509-aa8a-9f7f8e4be83f","weight":4},{"event_id":6932,"event_guid":"3ac46290-51e0-5ee2-93a0-8fb4b99cf67c","weight":9},{"event_id":6933,"event_guid":"9c1e1638-3379-51e5-8fa0-8cbe690a01a2","weight":1},{"event_id":6934,"event_guid":"39c3d09d-5be6-56b0-828f-0decd6c47d00","weight":2},{"event_id":6942,"event_guid":"598090e5-63b6-58d5-a539-823e5741e7d5","weight":1},{"event_id":6946,"event_guid":"7f58ea23-0bb4-502b-a754-a2c31c713398","weight":1},{"event_id":6948,"event_guid":"b3de8588-0b08-5c0b-b7eb-152aedeea572","weight":1},{"event_id":6950,"event_guid":"81fb366e-aad4-57a9-a034-487c8d583276","weight":1},{"event_id":6954,"event_guid":"39151e7e-9ca2-594c-8888-7faa6504e32d","weight":5},{"event_id":6958,"event_guid":"458227d2-7434-527f-9771-ba3eaf0a1147","weight":1},{"event_id":6960,"event_guid":"a715834a-598a-59ec-b010-ff14516e5b71","weight":2},{"event_id":6968,"event_guid":"1e6dba21-c595-5b15-982d-4929a501a58b","weight":3},{"event_id":6972,"event_guid":"c9e1f2a1-4e12-5b01-b3f6-c3d6ff75f6e8","weight":4},{"event_id":6980,"event_guid":"9af553f1-4867-5dbf-8367-3e51accc2af6","weight":1},{"event_id":6982,"event_guid":"9593f5f1-2aa2-5abc-8240-19c748293332","weight":4},{"event_id":6985,"event_guid":"814a06d5-678e-5402-9aee-f89bc58654e9","weight":2},{"event_id":6987,"event_guid":"089d2c0f-350b-5119-b9ea-f92352571c39","weight":1},{"event_id":6990,"event_guid":"f6cd723d-64bc-5ab1-b0ad-d33cdacf3c18","weight":7},{"event_id":6994,"event_guid":"8e9740a2-56f3-581c-b17d-fe1e63e84976","weight":1},{"event_id":6997,"event_guid":"80882101-f260-5736-bd76-d2d47cbbc8aa","weight":1},{"event_id":7007,"event_guid":"ca6ca903-4797-50a2-8d1a-d06afba1352b","weight":1},{"event_id":7009,"event_guid":"0efe6f4f-e4b4-5997-bc4f-58ae39c495da","weight":1},{"event_id":7015,"event_guid":"fe773b9a-4a85-5517-a591-c54d46f24634","weight":1},{"event_id":7016,"event_guid":"1ef521cc-4b8f-590c-8738-15bea2657941","weight":5},{"event_id":7020,"event_guid":"bf5e066c-52ef-5d53-b06b-fb1fd2af0aa5","weight":3},{"event_id":7029,"event_guid":"a68c2d2f-c237-5c2b-b016-9bde3e00b3a6","weight":5},{"event_id":7042,"event_guid":"40829380-cbd9-414e-8afe-b51c12d5e731","weight":4},{"event_id":7047,"event_guid":"40829380-cbd9-414e-8afe-b51c12d5e707","weight":3},{"event_id":7110,"event_guid":"3e7f1444-b72c-594f-b033-d96b21c1961c","weight":4},{"event_id":7130,"event_guid":"7bf66344-5900-5a5e-8657-8e1d20be92f5","weight":3},{"event_id":7143,"event_guid":"95fb5f56-4e01-5a6f-8fcd-cd6a235c08e0"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Bayern macht es vor, und NRW zieht nach. Weitere Länder werden folgen.\nUnter dem Vorwand der Terrorbekämpfung wird mit dem Rechtsbegriff des \"drohenden Gefährders\" die Gedankenpolizei eingeführt. Menschen können ohne Schuldnachweis wochenlang eingesperrt werden. Die Polizei darf Daten sammeln wie ein Geheimdienst, monatelang Hausarrest erteilen und Handys überwachen von Leuten, die jemanden kennen, der eine kennt, die vielleicht einmal vorhat, eine Straftat zu begehen.\nGanz nebenbei werden Taser eingeführt und anlasslose verdachtsunabhängige Kontrollen eingeführt. Jeder Mensch steht unter Generalverdacht. Stirbt die Freiheit an ihrer Verteidigung?","original_language":"deu","persons":["Christian Mertens"],"tags":["openchaos","1805","OpenChaos"],"view_count":3743,"promoted":false,"date":"2018-05-24T00:00:00.000+02:00","release_date":"2018-05-25T02:00:00.000+02:00","updated_at":"2026-03-10T17:00:05.593+01:00","length":7357,"duration":7357,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1805-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1805-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c3dbbb23-45de-421a-89bf-74ba5f0607e8-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c3dbbb23-45de-421a-89bf-74ba5f0607e8-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2018.05.polizeigesetz-nrw","url":"https://api.media.ccc.de/public/events/c3dbbb23-45de-421a-89bf-74ba5f0607e8","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":609,"event_guid":"import-3cf81cc3f1f6d963b9","weight":10},{"event_id":1057,"event_guid":"import-d93f6f776ff5e0bf3d","weight":79},{"event_id":1163,"event_guid":"import-73f7a87aafc447fa0b","weight":7},{"event_id":1728,"event_guid":"3poSeUcpc6woNaI5dhATcQ","weight":10},{"event_id":2291,"event_guid":"2f68e356-6c3f-4034-9640-c06d717ed96b","weight":8},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":8},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":8},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":7},{"event_id":3696,"event_guid":"9d36932f-616a-4677-b924-60c1986fbbfc","weight":5},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":8},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":7},{"event_id":3853,"event_guid":"efeeaebc-3f29-11e7-9ba7-2f214305c877","weight":14},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":8},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":18},{"event_id":4706,"event_guid":"cc614df4-ff39-4475-99d5-6597e5fadc75","weight":1},{"event_id":4765,"event_guid":"9326038b-f781-4707-b35a-9ef52f98d35a","weight":8},{"event_id":4767,"event_guid":"f2ca3661-30c8-476e-9d6b-920bb20b21eb","weight":15},{"event_id":4791,"event_guid":"8d29d28d-a222-4731-bdfc-fde590385cae","weight":9},{"event_id":4823,"event_guid":"bf924a39-2860-4e27-8741-b8fa0c010363","weight":6},{"event_id":4826,"event_guid":"16645200-2036-4a3c-a44d-a5ff44ac2991","weight":9},{"event_id":4850,"event_guid":"949bee69-3be0-4cc8-915b-5f1167141dcc","weight":9},{"event_id":5229,"event_guid":"53464646-4151-2020-2020-202020202020","weight":9},{"event_id":5252,"event_guid":"7805cae2-d664-441a-af87-555a2c5633a2","weight":25},{"event_id":5325,"event_guid":"dda720ca-f11b-5ef5-beeb-5e33d2ed3e53","weight":6},{"event_id":5337,"event_guid":"50c2af4c-4826-50ee-bde7-cbed07d3bf2e","weight":9},{"event_id":5359,"event_guid":"42019c8e-4b3d-51a3-833c-0f83c0f543d5","weight":9},{"event_id":5367,"event_guid":"f738088c-f2cf-54ab-a6cd-f3f5c5cc8481","weight":1},{"event_id":5370,"event_guid":"ea068ddc-aef6-5367-ba79-cd90ddbf8353","weight":12},{"event_id":5380,"event_guid":"acc35999-4707-5ef9-a8af-f3b197f09704","weight":23},{"event_id":5393,"event_guid":"faea7134-21b2-5264-9e02-a8706b63e7fc","weight":12},{"event_id":5471,"event_guid":"1bb2c793-0c0a-51da-94d6-82ae8d11d0d9","weight":1},{"event_id":5527,"event_guid":"rAlGHFVF-3UnW0IhVWOEEQ","weight":1},{"event_id":5569,"event_guid":"d37bc91e-f1dd-4fbb-b793-c08b2436eecb","weight":51},{"event_id":5608,"event_guid":"c267313a-6849-482e-8ab3-fa7d12f37864","weight":20},{"event_id":5610,"event_guid":"456fb60c-5ce7-11e8-be47-1fb2912eb889","weight":9},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":31},{"event_id":5657,"event_guid":"be3340d0-8c90-51ea-a0a7-7b5650d762b4","weight":18},{"event_id":5722,"event_guid":"906c5611-7e85-4593-8a4e-b33dedfce19e","weight":12},{"event_id":5832,"event_guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","weight":7},{"event_id":6015,"event_guid":"2565d7fd-510e-57b4-a4e8-2566d6c85915","weight":16},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":37},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":25}]},{"guid":"5400c892-12e3-4199-b976-a68b0b54c159","title":"Usable Privacy and Security","subtitle":"Gebrauchstaugliche sichere Software","slug":"c4.openchaos.2017.09.usable-privacy","link":"https://c3voc.de","description":"Im September 2016 erreichte das Mirai-Botnet eine Kapazität von 1,1 TBit/s und wurde zu einer Bedrohung für das weltweite Internet. Betroffene Systeme unterstützten Benutzer aktiv dabei unsichere Einstellungen zu verwenden und wurden so kompromittiert.\nAuch die Geschichte von PGP (Pretty-Good-Privacy) ist voll von Fehlern und Fehlannahmen bezüglich Usability. Bereits 1999 in der Forschung erkannt, liefert das USENIX Symposium On Usable Privacy and Security (SOUPS) jährlich einen tiefen Einblick in das Design sicherer und datenschutzfreundlicher Systeme. Dazu gehören die Relevanz von TLS-Fehlermeldungen oder die Eignung von Kennwortrichtlinien.\nDieser Vortrag gibt eine Einführung in Usable Privacy \u0026 Security. Mit Fallbeispielen und Forschungsergebnissen werden wir uns dem Thema 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zur Geschichte von media gehören auch immer wieder kleine Anekdoten, wie der gescheiterte Versuch Torrents mit Web-Seeds anzubieten, oder die gesperrten Videos in der Apple-TV App.","original_language":"deu","persons":["Mario 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Nur selten ist sie beim Nutzer willkommen. Gerade technikaffine Nutzer haben eine einfache Lösung, sich von der überall nervenden Online-Werbung zu befreien. Man installiert einen Adblocker und lebt scheinbar werbefrei. Doch so einfach ist es nicht, sich den Folgen des Werbegeschäfts zu entziehen.\nDer Datenskandal um Facebook und Cambridge Analytica hat ein neues Schlaglicht darauf geworfen, wie wichtig Onlinewerbung inzwischen genommen wird. Doch selbst abseits der Politik kann man die Augen kaum davor verschließen, wie sehr Werbung unser Leben mittlerweile beeinflusst. Das Geschäftsmodell Onlinewerbung ist so omnipräsent, dass unsere Software, unsere Protokolle und unsere Hardware für die Auslieferung von Werbebotschaften optimiert sind. Sogar Werbeblocker werden durch Werbegelder finanziert.\nDer Journalist Torsten Kleinz begleitet das Geschäft mit der Werbung seit mehr als fünf Jahren. Beim OpenChaos erklärt er den Kampf Adblocker gegen Anti-Adblocker und seine Folgen, schildert die neusten Entwicklungen der Werbebranche und zeigt die ethischen Fragen auf, die sich angesichts des ruderlosen Milliardengeschäfts stellen.","original_language":"deu","persons":["Torsten Kleinz"],"tags":["openchaos","1804","OpenChaos"],"view_count":697,"promoted":false,"date":"2018-04-26T00:00:00.000+02:00","release_date":"2018-04-26T02:00:00.000+02:00","updated_at":"2026-01-24T22:00:11.909+01:00","length":3825,"duration":3825,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1804-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1804-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/7805cae2-d664-441a-af87-555a2c5633a2-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/7805cae2-d664-441a-af87-555a2c5633a2-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2018.04.onlinewerbung","url":"https://api.media.ccc.de/public/events/7805cae2-d664-441a-af87-555a2c5633a2","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":10},{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":9},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":7},{"event_id":2451,"event_guid":"746c83c2-b29b-41e7-be5b-fafdfe923a5a","weight":10},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":10},{"event_id":2980,"event_guid":"c2724e07-7ce6-41ba-b88b-00bbe950e98b","weight":9},{"event_id":3034,"event_guid":"6e3c061e-495f-450b-ba96-c777c8669458","weight":9},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":15},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":11},{"event_id":3689,"event_guid":"1f7eb981-2819-4824-8f40-4ddde0be7bf3","weight":3},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":11},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":8},{"event_id":3853,"event_guid":"efeeaebc-3f29-11e7-9ba7-2f214305c877","weight":4},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":7},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":13},{"event_id":4706,"event_guid":"cc614df4-ff39-4475-99d5-6597e5fadc75","weight":10},{"event_id":4760,"event_guid":"b14c9516-d104-465e-8c7c-b2eae5d31f5a","weight":2},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":12},{"event_id":5064,"event_guid":"762f9a23-ca2c-4391-a725-8651eb5a0609","weight":20},{"event_id":5253,"event_guid":"25b036d4-ae45-4173-9806-65611e90a78c","weight":3},{"event_id":5271,"event_guid":"3af88c8a-b051-4691-9c3e-f518f42ca5d3","weight":9},{"event_id":5280,"event_guid":"2fb00fb8-016b-42a0-a2db-742b6fc2dc80","weight":7},{"event_id":5283,"event_guid":"f636e390-cad4-47f7-873d-7a23431fed16","weight":4},{"event_id":5287,"event_guid":"5d5e3275-0f1a-41ae-a1ad-a98ba66f1390","weight":14},{"event_id":5290,"event_guid":"1574d0a2-4708-4dd9-9d70-9b75cd075639","weight":2},{"event_id":5370,"event_guid":"ea068ddc-aef6-5367-ba79-cd90ddbf8353","weight":7},{"event_id":5521,"event_guid":"c3dbbb23-45de-421a-89bf-74ba5f0607e8","weight":25},{"event_id":5569,"event_guid":"d37bc91e-f1dd-4fbb-b793-c08b2436eecb","weight":30},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":17},{"event_id":5722,"event_guid":"906c5611-7e85-4593-8a4e-b33dedfce19e","weight":13},{"event_id":5832,"event_guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","weight":17},{"event_id":6114,"event_guid":"02a2a813-6981-438c-ad51-a1b55d79e613","weight":8},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":29},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":21},{"event_id":7236,"event_guid":"e3bdda0e-c95f-4021-8500-3718a2913352","weight":7}]},{"guid":"abc08c53-0159-4106-841c-28682e75c378","title":"Palantir, Dark Enlightenment und die deutsche Polizei","subtitle":"","slug":"c4.openchaos.2025.10.palantir-dark-enlightenment-deutsche-polizei","link":"https://c3voc.de","description":"Das Pentagon findet es gut, die Migrationsbehörde ICE findet es gut, Banken und Wirtschaft finden es gut, Sauron findet es sehr gut und da überrascht es nicht, dass die deutschen Sicherheitsbehörden es auch gut finden: Die Überwachungssoftware Palantir\r\n\r\nMomentan ist die amerikanische Überwachungssoftware Palantir in aller Munde. Nicht nur, weil die deutsche Polizei es in den Bundesländern Bayern, Hessen und Nordrhein-Westfalen bereits verwendet und der deutsche Innenminister die Nutzung gerne bundesweit ausweiten würde; nicht nur, weil die Behörden sich damit in sicherheitsrelevanten Vorgängen im Inneren von einem ausländischen Softwarekonzern abhängig machen, dessen Kunden einer Blackbox sie damit sind; sondern auch, weil die Gründer der Firma Palantir in den USA eine reaktionäre rechte Politik verfolgen, deren Ziele durch die Anwendung der Software Palantir, etwa bei der Verfolgung von Migranten durch die Migrationsbehörde ICE, konkret mit umgesetzt werden.\r\n\r\nSeit dem Beginn der zweiten Amtszeit des US Präsidenten Donald Trump findet eine Umwälzung der politischen und institutionellen Landschaft in den USA statt. Was mit Elon Musks Department of Government Efficiency (DOGE) und dem Rauswurf vieler Staatsbeamter begann, wurde mit der öffentlichen Verfolgung von Menschen und dem Einsatz von Militär im Inland fortgesetzt. Diese Entwicklungen passen auffällig gut zu den Vorstellungen des Dark Enlightenment, dessen Vordenker Curtis Yarvin den Palantir Gründer Peter Thiel persönlich gecoached hat. Zu den weiteren Anhängern von Curtis Yarvins Denken gehört der US Vizepräsident JD Vance, ein ehemaliger Angestellter von Peter Thiel und dessen Protegé. Zudem war es Thiel, der bereits 2016 die CEOs von Amazon, Microsoft, Facebook, Google und Apple und Elon Musk im Trump Tower zusammengebracht hat.\r\n\r\nKönnten die Entwicklungen in den USA auf Thiels beharrliches Wirken – konservative (rechtsextreme) Ideen mit bestimmten Personen in Machtstellungen zusammenzubringen – zurückzuführen sein? Anhand des Werdegangs von Peter Thiel wird der Vortrag entdecken, um was für Figuren es sich bei Peter Thiel und seinem Netzwerk handelt und welchen Einfluss es mittlerweile entwickelt hat und von welcher Ideologie es angetrieben wird. Es wird sich zeigen, dass es Thiel im Eigentlichen nicht um die deutsche Polizei oder um das Abschieben von Migranten geht, sondern darum dass der Menschheit eine große Prüfung bevorsteht: die Wahl zwischen dem Armageddon, dem Antichrist oder Thiel und seiner PayPal Mafia, die uns mit Palantir vor dem Untergang bewahren. Am Ende werden wir uns entscheiden müssen.\r\n\r\nWas das dann bedeutet könnt ihr hier sehen (Teil 2): https://media.ccc.de/v/c4.openchaos.2025.11.autoritaere-high-tech-komplex-unterwanderung-der-demokratie\r\n\r\nDas im Vortrag erwähnte Zusatzmaterial ist hier verfügbar: https://koeln.ccc.de/html/oc_palantir/\r\n\r\nLicensed to the public under https://creativecommons.org/licenses/by-sa/4.0/","original_language":"deu","persons":["thee"],"tags":["2510","2025","openchaos","OpenChaos","c4","openchaos-deu","cccc","koeln"],"view_count":10045,"promoted":false,"date":"2025-10-30T19:00:00.000+01:00","release_date":"2025-11-06T00:00:00.000+01:00","updated_at":"2026-04-02T22:00:07.405+02:00","length":5211,"duration":5211,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2510-abc08c53-0159-4106-841c-28682e75c378.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2510-abc08c53-0159-4106-841c-28682e75c378_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2510-abc08c53-0159-4106-841c-28682e75c378.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2510-abc08c53-0159-4106-841c-28682e75c378.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2025.10.palantir-dark-enlightenment-deutsche-polizei","url":"https://api.media.ccc.de/public/events/abc08c53-0159-4106-841c-28682e75c378","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[]},{"guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","title":"CPU-Design für Einsteiger und RISC-V","subtitle":"","slug":"c4.openchaos.2017.06.cpu-design-fuer-einsteiger-und-risc-v","link":"https://c3voc.de","description":"\u003cp\u003eWer schon immer einen eigenen Prozessor bauen wollte, der kann das mit RISC-V problemlos tun. Da rekonfigurierbare Hardware (insbesondere FPGAs) inzwischen f\u0026uuml;r wirklich wenig Geld zu haben sind, steht dem Bastelspass nichts mehr im Wege! Im Vortrag wird ein \u0026Uuml;berblick gegeben \u0026uuml;ber Prozessoren im Allgemeinen, RISC-V, sowie ein einfaches open-source CPU-Design f\u0026uuml;r FPGAs, welches RISC-V-Befehle ausf\u0026uuml;hren kann. Auch ein schneller Blick ins RISC-V \u0026Ouml;kosystem wird gewagt.\u003c/p\u003e","original_language":"deu","persons":["Maik"],"tags":["openchaos","1706"],"view_count":2406,"promoted":false,"date":"2017-06-29T00:00:00.000+02:00","release_date":"2017-08-23T02:00:00.000+02:00","updated_at":"2026-02-28T19:00:04.998+01:00","length":7706,"duration":7706,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1706-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1706-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/da208942-2be8-4f14-9466-ba8e7b74fca8-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/da208942-2be8-4f14-9466-ba8e7b74fca8-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2017.06.cpu-design-fuer-einsteiger-und-risc-v","url":"https://api.media.ccc.de/public/events/da208942-2be8-4f14-9466-ba8e7b74fca8","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":12},{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":7},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":27},{"event_id":2451,"event_guid":"746c83c2-b29b-41e7-be5b-fafdfe923a5a","weight":14},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":10},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":8},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":16},{"event_id":3034,"event_guid":"6e3c061e-495f-450b-ba96-c777c8669458","weight":10},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":12},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":9},{"event_id":3640,"event_guid":"700a07e7-a9c4-437b-a4c5-4491b23a9b4a","weight":8},{"event_id":3671,"event_guid":"4ef69e6a-026f-4b30-888d-af654b220a3d","weight":10},{"event_id":3775,"event_guid":"f854e264-4728-472e-9e57-4dad6ea3d668","weight":10},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":23},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":9},{"event_id":3955,"event_guid":"b71b550a-e3a7-449d-a68d-7fce348d0a4b","weight":10},{"event_id":3988,"event_guid":"0dfdf83e-5cc3-4443-930e-fc149a84c812","weight":9},{"event_id":4240,"event_guid":"dec63dd2-d66b-419d-863d-c20fd5ce91dd","weight":5},{"event_id":4396,"event_guid":"b5188ef7-b244-48fc-826e-7603cd1d7837","weight":5},{"event_id":4551,"event_guid":"524e4a4e-584d-2020-2020-202020202020","weight":12},{"event_id":4605,"event_guid":"8d382482-9817-11e7-951c-33f9470b8ba7","weight":5},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":19},{"event_id":4706,"event_guid":"cc614df4-ff39-4475-99d5-6597e5fadc75","weight":11},{"event_id":4760,"event_guid":"b14c9516-d104-465e-8c7c-b2eae5d31f5a","weight":13},{"event_id":4766,"event_guid":"19b7e5d7-bba7-46da-afbc-f16d43fe395f","weight":7},{"event_id":4767,"event_guid":"f2ca3661-30c8-476e-9d6b-920bb20b21eb","weight":8},{"event_id":4776,"event_guid":"825add58-9218-4afe-a489-4dd8c4408e45","weight":8},{"event_id":4795,"event_guid":"722ce759-9cde-4e3b-8db5-5a97aa9673d9","weight":10},{"event_id":4826,"event_guid":"16645200-2036-4a3c-a44d-a5ff44ac2991","weight":11},{"event_id":4833,"event_guid":"e1a60f7b-6a56-4dce-ab3a-c686fa940aa8","weight":11},{"event_id":4852,"event_guid":"77aaf0be-d2a8-4531-be02-c91c19b1ca77","weight":17},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":7},{"event_id":5064,"event_guid":"762f9a23-ca2c-4391-a725-8651eb5a0609","weight":13},{"event_id":5252,"event_guid":"7805cae2-d664-441a-af87-555a2c5633a2","weight":7},{"event_id":5521,"event_guid":"c3dbbb23-45de-421a-89bf-74ba5f0607e8","weight":8},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":39},{"event_id":5832,"event_guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","weight":23},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":10},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":33},{"event_id":7236,"event_guid":"e3bdda0e-c95f-4021-8500-3718a2913352","weight":7}]},{"guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","title":"restic","subtitle":"Backups mal richtig","slug":"c4.openchaos.2016.01.restic","link":"http://koeln.ccc.de/updates/2016-01-13_OC_Restic.xml","description":"\u003cp\u003e\u003cspan style=\"font-size: 0.8em;\"\u003eJeder kennt das Problem: Regelm\u0026auml;\u0026szlig;ig Backups machen ist aufwendig, nervig und oft auch noch fehleranf\u0026auml;llig. Das beginnt schon mit der Auswahl der Software und der Frage, wo denn die Daten gespeichert werden sollen. Dieser sollte ja m\u0026ouml;glichst unabh\u0026auml;ngig von den zu sichernden Daten sein, also idealerweise nicht auf dem gleichen physischen Medium liegen. H\u0026auml;ufig stellt sich dann die Frage, ob man einem Speicherort wie einem mit anderen Personen geteilten Server vertrauen kann, wenn dort jemand anderes administrative Berechtigungen hat (oder sich verschaffen kann). \u003c/span\u003e\u003c/p\u003e\r\n\u003cp\u003eWenige aktuelle Backup-Programme nehmen sich dieser Problematik an. Andere sind aktuellen Datenmengen nicht gewachsen oder werden mit einer typischen Latenz eines DSL-Anschluss zu einem Server im Rechenzentrum nicht fertig.\u003c/p\u003e\r\n\u003cp\u003eAus Frustration \u0026uuml;ber die bestehenden M\u0026ouml;glichkeiten begannt fd0 Anfang 2014 mit der Entwicklung von \"restic\", einem neuen, in Go geschriebenen Backup-Programm als Freie Software. Die Designziele orientieren sich dabei an praktischen Gegebenheiten und sollen Backups f\u0026uuml;r Benutzer komfortabel machen. Dies schlie\u0026szlig;t ein, dass Backups einfach, schnell und effizient erstellt werden k\u0026ouml;nnen, und der Wiederherstellungsprozess unkompliziert und schnell geht. Weiterhin soll es m\u0026ouml;glich sein, regelm\u0026auml;\u0026szlig;ig mit wenig Benutzerinteraktion zu \u0026uuml;berpr\u0026uuml;fen, ob die gespeicherten Daten vollst\u0026auml;ndig und fehlerfrei abgerufen werden k\u0026ouml;nnen. All dies und noch viel mehr bietet restic.\u003c/p\u003e\r\n\u003cp\u003eIm Vortrag stellt fd0 zun\u0026auml;chst die Anforderungen und Ideen vor und geht dann auf die Implementierung ein. In einem praktischen Teil wird demonstriert, wie restic funktioniert was ben\u0026ouml;tigt wird um heute schon[tm] einfach und schnell Backups zu erstellen. Schlie\u0026szlig;lich werden die zugrunde liegende Datenstrukturen und das Repository-Format interaktiv vorgef\u0026uuml;hrt.\u003c/p\u003e\r\n\u003cp\u003eDie gesamte Entwicklung findet transparent in einem \u003ca href=\"https://github.com/restic/restic\"\u003eGithub-Repository\u003c/a\u003e statt, die Homepage findet sich unter \u003ca href=\"https://restic.github.io\"\u003ehttps://restic.github.io\u003c/a\u003e.\u003c/p\u003e","original_language":"deu","persons":["Alexander “fd0” Neumann"],"tags":["Open 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ist ein Betriebssystem das Designprinzipien von Lisp Machine (High-Level Programmiersprache f\u0026uuml;r das gesamte System) und Plan 9 (Dateisysteme als prim\u0026auml;re API) vereint. 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Manche sehr einfach gehalten, manche sehr komplex. Einige permanent im Auge des Benutzers, einige eher hinter den Kulissen. Das OpenChaos im Monat M\u0026auml;rz besch\u0026auml;ftigt sich mit Typsystemen verschiedener Programmiersprachen und ihren Eigenheiten. Im speziellen werden Vor‐ und Nachteile von statischer und dynamischer Typisierung beleuchtet. \u003c/span\u003e\u003c/p\u003e\r\n\u003cp\u003e\u0026Uuml;ber die Jahre hat sich die Pr\u0026auml;ferenz von Industrie und Hobbyisten immer wieder zwischen Sprachen mit statischer und dynamischer Typisierung verschoben. Der momentane Trend geht oft zur dynamischen Typisierung, w\u0026auml;hrend gleichzeitig immer mehr Sprachen mit statischer Typisierung entwickelt werden. Vielfach kompilieren diese Sprachen jedoch nicht mehr direkt zu Maschinencode, sondern selbst zu einer dynamisch typisierten Sprache. Das Bed\u0026uuml;rfnis statische Typisierung auch in einem ansonsten von dynamisch typisierten Sprachen gepr\u0026auml;gten Umfeld zu verwenden ist also erkennbar.\u003c/p\u003e\r\n\u003cp\u003eDer Vortrag stellt die Vorteile von statischer Typisierung, wie die Vermeidung mancher Fehlerklassen zur Kompilezeit, heraus, betrachtet aber auch die zus\u0026auml;tzliche Komplexit\u0026auml;t und Einschr\u0026auml;nkungen gegen\u0026uuml;ber dynamischer Typisierung.\u003c/p\u003e\r\n\u003cp\u003eExemplarisch wird die Umsetzung verschiedener Szenarien in einer dynamisch typisierten Programmiersprache der Umsetzung in diversen statisch typisierten Programmiersprachen, mit ihren verschiedenen Typsystemen und deren Konzepten, gegen\u0026uuml;bergestellt.\u003c/p\u003e","original_language":"deu","persons":["Florob"],"tags":["Open Chaos","C4","Typsysteme","Programmiersprachen"],"view_count":505,"promoted":false,"date":"2016-03-31T20:15:00.000+02:00","release_date":"2016-04-15T02:00:00.000+02:00","updated_at":"2025-12-22T14:15:04.043+01:00","length":4926,"duration":4926,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2016.03.typsysteme.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2016.03.typsysteme_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/6e3c061e-495f-450b-ba96-c777c8669458-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/6e3c061e-495f-450b-ba96-c777c8669458-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2016.03.typsysteme","url":"https://api.media.ccc.de/public/events/6e3c061e-495f-450b-ba96-c777c8669458","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":21},{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":4},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":4},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":14},{"event_id":2451,"event_guid":"746c83c2-b29b-41e7-be5b-fafdfe923a5a","weight":5},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":8},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":5},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":16},{"event_id":3107,"event_guid":"57ef4367-5baf-40f5-84a1-89f9f9f29b4f","weight":4},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":14},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":8},{"event_id":3775,"event_guid":"f854e264-4728-472e-9e57-4dad6ea3d668","weight":13},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":9},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":7},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":10},{"event_id":4760,"event_guid":"b14c9516-d104-465e-8c7c-b2eae5d31f5a","weight":4},{"event_id":5252,"event_guid":"7805cae2-d664-441a-af87-555a2c5633a2","weight":9},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":4},{"event_id":6748,"event_guid":"b3fe7f83-cdd3-436a-91db-56c13b2aeb3a","weight":5},{"event_id":7236,"event_guid":"e3bdda0e-c95f-4021-8500-3718a2913352","weight":5}]},{"guid":"574bb969-0e94-4b67-b68d-e0b9786469ad","title":"Strahlungsforschung für zukünftige Mondmissionen","subtitle":"im Rahmen des Artemis Programms","slug":"c4.openchaos.2024.11.strahlungsforschung-mondmissionen-artemis","link":"https://c3voc.de","description":"Ionisierende kosmische Strahlung ist eine der großen Gefahren für Astronauten im Weltall. Wie kann diese nicht spürbare Gefahr gemessen und sichtbar gemacht werden?\n\nZum Mond, zum Mars und darüber hinaus – hochenergetische kosmische Strahlung und Sonnenstürme können Körper und Raumschiff schädigen. Außerhalb des schützenden Magnetfelds und der Atmosphäre der Erde bedeutet die ionisierende Strahlung vor allem Gefahr. Um wirksame Schutzmaßnahmen zu entwickeln, müssen zuverlässige Messdaten erhoben werden.\n\nWir freuen uns Karel Marsalek bei uns zu begrüßen, den Leiter der Entwicklung elektronischer aktiver Instrumente für die Messung der kosmischen ionisierenden Strahlung im Weltall am Deutschen Zentrum für Luft- und Raumfahrt. Er spricht über die Entwicklung, Kalibration, Charakterisierung und Tests der Weltraumhardware, die zur Detektion von Strahlung an Bord der ISS, auf Satelliten, in der Mondumlaufbahn sowie auf der Mondoberfläche und auf Erkundungsmissionen eingesetzt wird. Im Vortrag nimmt Karel uns im Kontext der Artemis I Mission auf eine Reise von der Erde zum Mond und wieder zurück mit, um zu zeigen, wie aufgrund der Messdaten die Schutzeigenschaften der Raumfähren evaluiert werden.\n\nLicensed to the public under https://creativecommons.org/licenses/by-sa/4.0/","original_language":"deu","persons":["Karel Marsalek"],"tags":["2411","2024","openchaos","OpenChaos","c4","openchaos-deu"],"view_count":321,"promoted":false,"date":"2024-11-28T19:00:00.000+01:00","release_date":"2025-07-04T00:00:00.000+02:00","updated_at":"2026-03-03T16:15:06.261+01:00","length":6292,"duration":6292,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2411-574bb969-0e94-4b67-b68d-e0b9786469ad.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2411-574bb969-0e94-4b67-b68d-e0b9786469ad_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2411-574bb969-0e94-4b67-b68d-e0b9786469ad.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2411-574bb969-0e94-4b67-b68d-e0b9786469ad.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2024.11.strahlungsforschung-mondmissionen-artemis","url":"https://api.media.ccc.de/public/events/574bb969-0e94-4b67-b68d-e0b9786469ad","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[]},{"guid":"f0a52094-8421-4960-a216-5dd76232ebe8","title":"Revision Nachlese 2025","subtitle":null,"slug":"c4.openchaos.2025.04.revision-nachlese","link":"https://c3voc.de","description":"Direkt nachdem das Osterwochenende und die Revision-Demoparty vorbei sind und die meisten Demoszener wieder zurück in der Realität – oder zumindest in dem, was davon nach vier Tagen Demo-Competitions, Shaderwahn und Bitjam noch übrig ist – laden wir zur Revision-Nachlese ein.\n\nWie jedes Jahr pilgerte die internationale Demoszene nach Saarbrücken zur Revision, der größten reinen Demoszene-Party der Welt – und kam mit vollen Herzen und leerem Schlafkonto zurück.\n\nBeim OpenChaos zeigt Tobi vom Digitale Kultur e.V. euch Highlights und persönliche Favoriten aus den Wettbewerben der Revision 2025: von High-End-PC bis C64, von Demos in 4 KB bis Produktionen auf Fantasy-Konsolen.\n\nWie immer gibt es Anekdoten, Geschichten und nicht ganz offensichtliche Hintergründe zu den Demos und ihren Machern.\n\nOb du selbst vor Ort warst oder nicht einmal weißt, was ein Demo überhaupt ist – komm vorbei, schau rein, staune mit. Vielleicht erwischt dich das Demoszene-Fieber.\n\nLicensed to the public under https://creativecommons.org/licenses/by-sa/4.0/","original_language":"deu","persons":["Tobias Heim"],"tags":["2504","2025","openchaos","OpenChaos","c4","openchaos-deu"],"view_count":133,"promoted":false,"date":"2025-04-24T20:00:00.000+02:00","release_date":"2025-09-08T00:00:00.000+02:00","updated_at":"2026-04-01T19:00:04.646+02:00","length":9788,"duration":9788,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2504-f0a52094-8421-4960-a216-5dd76232ebe8.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2504-f0a52094-8421-4960-a216-5dd76232ebe8_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2504-f0a52094-8421-4960-a216-5dd76232ebe8.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2504-f0a52094-8421-4960-a216-5dd76232ebe8.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2025.04.revision-nachlese","url":"https://api.media.ccc.de/public/events/f0a52094-8421-4960-a216-5dd76232ebe8","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[]},{"guid":"93e378a5-3b6b-4a8d-890c-fe3b890428c8","title":"State of Retro Gaming in Emacs","subtitle":null,"slug":"c4.openchaos.2019.11.retro-gaming-emacs","link":"https://c3voc.de","description":"Emacs ist für manche Menschen ein erweiterbarer Texteditor, für andere ein\ngroßartiges Betriebssystem. Weitaus weniger bekannt ist, dass es möglich ist\ngraphische Demos und Spiele für Emacs zu programmieren, unter anderem sogar\nEmulatoren für bekannte Spiele-Plattformen wie der NES-Konsole und dem GameBoy.\n\nIn diesem Vortrag werden die Fähigkeiten von Emacs jenseits dem Editieren von\nText betrachtet, einige Emulatoren demonstriert und schließlich das\nchip8.el-Projekt des Vortragenden im Detail vorgestellt. Fokus liegt dabei auf\nden Eigenheiten der Spieleplattform CHIP-8, der Funktionsweise des Emulators\nsowie den Herausforderungen, welche bei der Umsetzung aufgetreten sind.","original_language":"deu","persons":["Vasilij \"wasamasa\" Schneidermann"],"tags":["openchaos","1911","2019","OpenChaos"],"view_count":1694,"promoted":false,"date":"2019-11-28T20:31:00.000+01:00","release_date":"2019-11-29T01:00:00.000+01:00","updated_at":"2026-02-18T03:15:05.870+01:00","length":2666,"duration":2666,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1911-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1911-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1911-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1911-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2019.11.retro-gaming-emacs","url":"https://api.media.ccc.de/public/events/93e378a5-3b6b-4a8d-890c-fe3b890428c8","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":765,"event_guid":"import-ec99415102c530a179","weight":1},{"event_id":1057,"event_guid":"import-d93f6f776ff5e0bf3d","weight":1},{"event_id":1728,"event_guid":"3poSeUcpc6woNaI5dhATcQ","weight":3},{"event_id":2142,"event_guid":"1ec34f5b-5dfb-4cdf-bce7-8b73dde4a995","weight":1},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":1},{"event_id":2291,"event_guid":"2f68e356-6c3f-4034-9640-c06d717ed96b","weight":2},{"event_id":2875,"event_guid":"0bdbef2d-1594-4582-b315-7ee5da5505bf","weight":1},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":1},{"event_id":3041,"event_guid":"29aaed8b-5b17-4feb-a9fc-7cc584682746","weight":1},{"event_id":3695,"event_guid":"c300b194-2a85-4705-92aa-b4e789882303","weight":1},{"event_id":3702,"event_guid":"5fb5e620-383a-4679-b37a-beef20bcd4fe","weight":1},{"event_id":4866,"event_guid":"117a52b4-f675-49dd-aafe-659c07b6bc9c","weight":1},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":2},{"event_id":6474,"event_guid":"f58a2b6d-bde0-483b-a8db-043ea9371cb6","weight":3},{"event_id":6497,"event_guid":"93c1500d-c639-4247-854e-6e51e167dbec","weight":2},{"event_id":7251,"event_guid":"b69c19ce-7c89-4afd-9396-ea664f80dba7 ","weight":1},{"event_id":7286,"event_guid":"a2f61e35-bf54-4cf9-9362-e4d04fa94915","weight":1},{"event_id":7287,"event_guid":"0ff8cbfa-b751-4107-beec-33a2678939d8","weight":1},{"event_id":7298,"event_guid":"f87f303a-5b65-4cfe-b4b6-54c8557e868e","weight":1},{"event_id":7332,"event_guid":"50ad5991-1b2f-4a92-ba87-dec6456f085a","weight":1},{"event_id":7357,"event_guid":"38775ee6-c151-4cc6-974c-4d121f95b159","weight":1},{"event_id":7371,"event_guid":"074a5ea0-fd00-4529-912c-c986a8856f6b","weight":1},{"event_id":7381,"event_guid":"e988c76b-3a47-46de-a2c7-77c49a5e731b","weight":1},{"event_id":7383,"event_guid":"acc3dd01-bec3-444f-80c1-5dd37f522aa4","weight":2},{"event_id":7397,"event_guid":"f650773d-d9df-4050-814c-a9505c439b30","weight":1},{"event_id":7417,"event_guid":"84c25f65-998a-43a8-bd32-2fe91fe42ff7","weight":1},{"event_id":7866,"event_guid":"3349eaff-53ab-5345-afa9-b6ed4203ce6a","weight":1},{"event_id":7892,"event_guid":"b231881d-afaf-56f5-a57a-eaaab6668d79","weight":1},{"event_id":7939,"event_guid":"1dc2d483-bed1-4f86-b1c5-c7b23e7917e9","weight":1},{"event_id":8020,"event_guid":"be4a8db4-e60b-11e9-895b-3ca9f456171c","weight":2},{"event_id":8166,"event_guid":"1db9ce1c-e9bb-547f-9481-8add961acbdb","weight":1},{"event_id":8185,"event_guid":"a92717f6-8858-4162-9e72-9aedd4b830cb","weight":3},{"event_id":8187,"event_guid":"456fb60c-5ce7-11e8-be47-1fb2912eb8104","weight":1},{"event_id":8188,"event_guid":"3633eb0d-26e0-4b09-8028-36da13be0bed","weight":2},{"event_id":8194,"event_guid":"f1cfc908-44e1-4292-89d0-5f9a17a68b79","weight":1},{"event_id":8200,"event_guid":"fcaac88a-1f06-49e6-a33a-381bcba7a636","weight":1},{"event_id":8202,"event_guid":"45ce22f3-8619-5992-841e-de4ffd8a9aca","weight":1},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":3}]},{"guid":"762f9a23-ca2c-4391-a725-8651eb5a0609","title":"„Schutzranzen“","subtitle":"Vernetztes Fahren auf Überwachungskurs","slug":"c4.openchaos.2018.02.schutzranzen","link":"https://c3voc.de","description":"Das Projekt „Schutzranzen“ trackt Grundschulkinder in Ludwigsburg und will das zukünftig bundesweit machen. Apps, GPS-Tracker im Ranzen und eine Cloud sollen die Kinder im Straßenverkehr sicherer machen.\nVerkehrspolitisch, pädagogisch, technisch und gesellschaftlich ist das Projekt ein Desaster. Denn es macht Überwachung zur Voraussetzung für vernetztes Fahren und Verkehrssicherheit. Die Autoindustrie kämpft mit solchen Projekten um Standards und Marktmacht. Vernetztes Fahren muss ohne Überwachung gehen – darum will Digitalcourage die „Schutzranzen“ stoppen.","original_language":"deu","persons":["Friedemann Ebelt"],"tags":["openchaos","1802","OpenChaos"],"view_count":830,"promoted":false,"date":"2018-02-22T00:00:00.000+01:00","release_date":"2018-02-23T01:00:00.000+01:00","updated_at":"2026-02-24T02:15:04.513+01:00","length":6091,"duration":6091,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1802-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1802-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/762f9a23-ca2c-4391-a725-8651eb5a0609-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/762f9a23-ca2c-4391-a725-8651eb5a0609-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2018.02.schutzranzen","url":"https://api.media.ccc.de/public/events/762f9a23-ca2c-4391-a725-8651eb5a0609","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":7},{"event_id":2938,"event_guid":"03c8501f-d327-4228-a9fe-2635370d25d2","weight":7},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":8},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":8},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":8},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":13},{"event_id":4760,"event_guid":"b14c9516-d104-465e-8c7c-b2eae5d31f5a","weight":13},{"event_id":4763,"event_guid":"2ef3b60f-6e5c-4c23-a145-d263685ec13e","weight":7},{"event_id":4826,"event_guid":"16645200-2036-4a3c-a44d-a5ff44ac2991","weight":9},{"event_id":4850,"event_guid":"949bee69-3be0-4cc8-915b-5f1167141dcc","weight":7},{"event_id":4855,"event_guid":"51b586be-500c-436e-b70c-fc433e65c4be","weight":9},{"event_id":4866,"event_guid":"117a52b4-f675-49dd-aafe-659c07b6bc9c","weight":9},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":25},{"event_id":5025,"event_guid":"712cf77b-e7d5-4619-be29-4fbbffd5d7fd","weight":2},{"event_id":5061,"event_guid":"f2fad80c-2d2f-4717-9a82-2406e7b23c77","weight":7},{"event_id":5062,"event_guid":"a15280a6-4f11-4c81-9e9c-7bd9cb6ed343","weight":18},{"event_id":5063,"event_guid":"10f07e44-10fb-11e8-9867-57ae00d1b19d","weight":11},{"event_id":5252,"event_guid":"7805cae2-d664-441a-af87-555a2c5633a2","weight":20},{"event_id":5569,"event_guid":"d37bc91e-f1dd-4fbb-b793-c08b2436eecb","weight":11},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":7},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":9},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":7}]},{"guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","title":"Krypto knacken für Anfänger","subtitle":null,"slug":"c4.openchaos.2018.10.krypto-knacken-fuer-anfaenger","link":"https://c3voc.de","description":"Moderne Kryptographie ist ein wichtiges Feld der angewandten Mathematik.\nDie dadurch erarbeiteten Bausteine, sogenannte kryptographische Primitive,\nwerden als sicher bewiesen.\nJedoch gilt diese Eigenschaft nur wenn diese korrekt verwendet werden.\nBei dem Kombinieren dieser Bausteine zu einem kryptographischen System\nkommt es oft zu Fehlern welche die gesamte Sicherheit des Systems\nkompromittieren können.\n\nIn diesem Vortrag werden bekannte Angriffe auf solche Systeme präsentiert,\ndafür werden Übungen von der Website Cryptopals verwendet\nund mit überraschend wenigen Zeilen Code in der Programmiersprache Ruby gelöst. 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Access und Plan S","subtitle":"","slug":"c4.openchaos.2019.10.plans","link":"https://c3voc.de","description":"Durch das Internet wird Open Access als Alternative zu den traditionellen Veröffentlichungsarten immer relevanter. Der freie Zugang zu Forschungsergebnissen vereinfacht und beschleunigt Forschung, zudem hat dadurch auch die Öffentlichkeit die Möglichkeit sich über den aktuellen Stand der Forschung zu informieren. Aber was ist Open Access überhaupt, wie wird es umgesetzt und wo sind die Unterschiede zu traditionellen (unfreien) Publikationsarten?\r\n\r\nIm Vortrag geht es auch um die Open Access Initiative \"Plan S\", die von Forschungsförderern getragen wird und sogar von der Europäischen Kommission unterstützt wird. Dabei soll das Thema auch für diejenigen zugänglich gemacht werden, die bisher noch nicht viel über Open Access und das wissenschaftliche Publikationssystem wissen.","original_language":"deu","persons":["Necro"],"tags":["openchaos","1910","2019","OpenChaos"],"view_count":220,"promoted":false,"date":"2019-10-31T20:15:00.000+01:00","release_date":"2019-11-12T01:00:00.000+01:00","updated_at":"2026-01-27T00:15:10.234+01:00","length":4392,"duration":4392,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1910-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1910-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1910-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1910-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2019.10.plans","url":"https://api.media.ccc.de/public/events/e9f17840-2080-4a96-94ad-676babe7ea3c","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2922,"event_guid":"47cbd880-f500-4c44-b717-c11ed1da087d","weight":1},{"event_id":5960,"event_guid":"541dc917-721a-59c3-b4eb-371a7e8acc3e","weight":1},{"event_id":5963,"event_guid":"a82b651c-90ab-5427-96f5-41907efaab08","weight":1},{"event_id":6579,"event_guid":"85ec8360-737b-4ee3-be2d-d8e050b1d117","weight":1},{"event_id":7363,"event_guid":"24b58c74-2bba-412e-84ac-c206f714f0b7","weight":2},{"event_id":8011,"event_guid":"c8dc6567-0601-4489-b38d-49f6553890b0","weight":2},{"event_id":8201,"event_guid":"3712beb2-12f2-552a-b831-b0cd5e4527ab","weight":1},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":1},{"event_id":8222,"event_guid":"465d4b06-089c-571d-af98-5d3c87cf53a3","weight":1}]},{"guid":"1671b3ca-a2a5-4db7-9e22-1d93d80e65fb","title":"Astropeiler Stockert","subtitle":null,"slug":"oc-19-astropeiler-stockert","link":"https://koeln.ccc.de/updates/2021-06-20_DOC_astropeiler.xml","description":"\n\n","original_language":"deu","persons":["Wolfgang Herrmann"],"tags":["openchaos","19","2021"],"view_count":433,"promoted":false,"date":"2021-06-24T22:30:00.000+02:00","release_date":"2021-12-22T00:00:00.000+01:00","updated_at":"2026-01-27T06:30:06.794+01:00","length":4642,"duration":4642,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/19-1671b3ca-a2a5-4db7-9e22-1d93d80e65fb.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/19-1671b3ca-a2a5-4db7-9e22-1d93d80e65fb_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/19-1671b3ca-a2a5-4db7-9e22-1d93d80e65fb.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/19-1671b3ca-a2a5-4db7-9e22-1d93d80e65fb.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/oc-19-astropeiler-stockert","url":"https://api.media.ccc.de/public/events/1671b3ca-a2a5-4db7-9e22-1d93d80e65fb","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[]},{"guid":"57ef4367-5baf-40f5-84a1-89f9f9f29b4f","title":"Revision Nachlese 2016","subtitle":"","slug":"c4.openchaos.2016.05.revision-nachlese","link":"http://koeln.ccc.de/updates/2016-05-21_OC_Revision_Nachlese.xml","description":"\u003cp\u003e\u003cspan style=\"font-size: 0.8em;\"\u003e Wie seit Jahren \u0026uuml;blich traf sich die Demoszene zu Ostern wieder auf der Revision um sich in verschiedenen Wettbewerbskategorien zu messen. Wieder gibt es die besten Werke beim Sonder-OpenChaos zu sehen. \u003c/span\u003e\u003c/p\u003e\r\n\u003cp\u003eMit lieb gewonnenen Traditionen sollte man nicht brechen. So wie sich die Demoszene traditionell zu Ostern trifft um sich in verschiedenen Wettbewerben zu messen so werden genauso traditionell einige Wochen, oder Monate, nach Ostern die besten Wettbewerbsbeitr\u0026auml;ge im Rahmen des OpenChaos gezeigt.\u003c/p\u003e\r\n\u003cp\u003eIn gewohnter Tradition ist Tobi vom Digitale Kultur e.V. zu Gast und stellt uns, eingebettet in einen launigen Vortrag, die besten Demos der Osterparty \"Revision\" vor und streut dabei random facts zu den Machern ein.\u003c/p\u003e","original_language":"deu","persons":["Tobias Heim"],"tags":["Open Chaos","C4","Revision","Demoszene"],"view_count":270,"promoted":false,"date":"2016-05-21T19:30:00.000+02:00","release_date":"2016-06-03T02:00:00.000+02:00","updated_at":"2026-01-17T19:30:13.417+01:00","length":8000,"duration":8000,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2016.05.revision-nachlese.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2016.05.revision-nachlese_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/57ef4367-5baf-40f5-84a1-89f9f9f29b4f-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/57ef4367-5baf-40f5-84a1-89f9f9f29b4f-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2016.05.revision-nachlese","url":"https://api.media.ccc.de/public/events/57ef4367-5baf-40f5-84a1-89f9f9f29b4f","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":7},{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":6},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":5},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":4},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":5},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":12},{"event_id":3034,"event_guid":"6e3c061e-495f-450b-ba96-c777c8669458","weight":4},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":7},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":7},{"event_id":3988,"event_guid":"0dfdf83e-5cc3-4443-930e-fc149a84c812","weight":8}]},{"guid":"fc277e27-2c88-43c8-9d50-2bdde0e36ed5","title":"kameras-stoppen.org","subtitle":null,"slug":"c4.openchaos.2020.11.kameras-stoppen-org","link":"https://c3voc.de","description":"\tKameras-Stoppen, eine Kölner Intitiative, stellt einen Zwischenbericht vor, was in den letzten anderthalb Jahren mit der polizeilichen Videoüberwachung in Köln geschehen ist.\n\t Die Kölner Initiative Kameras-Stoppen, die sich gegen die polizeiliche Videoüberwachung in Köln richtet, war vor anderthalb Jahre bei uns zu Besuch, um sich vorzustellen. In diesem Monat berichtet die Initiative, was sich in den letzten 18 Monaten in dem Bereich getan hat und inbesondere über das Klageverfahren, welches seit Juni 2018 am Verwaltungsgericht Köln anhängig ist. \n\t","original_language":"deu","persons":["kameras-stoppen.org"],"tags":["openchaos","2011","2020","OpenChaos"],"view_count":2341,"promoted":false,"date":"2020-11-26T20:00:00.000+01:00","release_date":"2020-12-15T00:00:00.000+01:00","updated_at":"2026-02-20T14:45:08.361+01:00","length":5839,"duration":5839,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2011-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2011-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2011-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/2011-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2020.11.kameras-stoppen-org","url":"https://api.media.ccc.de/public/events/fc277e27-2c88-43c8-9d50-2bdde0e36ed5","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[]},{"guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","title":"Why We Should Be Scared of Hardware Trojans","subtitle":null,"slug":"c4.openchaos.2018.01.hardware-trojans","link":"https://c3voc.de","description":"Spätestens seit den Snowden-Dokumenten ist weithin bekannt, dass es extrem gut ausgestattete Angreifer gibt, die enorme Anstrengungen unternehmen, um Sicherheitssysteme auszuhebeln. Besonders attraktiv für solche Angreiferklassen ist es, Kryptoverfahren zu schwächen, da sie oft das Rückgrat komplexer Sicherheitslösungen wie SSL/TLS aber auch elektronischer Ausweise bilden.\nIn diesem Vortrag werden einige aktuelle Forschungsergebnisse zu sogenannten Hardware-Trojaner vorgestellt. Dies sind Manipulationen von Hardware-ICs, mit denen sich Sicherheitssysteme schwächen lassen. Es geht insbesondere um Hardware-Trojaner, deren Detektion extrem schwierig ist, da sie auf der Transistorebene stattfinden. Wir stellen mögliche Angriffe vor, die sich sowohl gegen (Intel-) CPUs als auch gegen Spezial-ICs in Netzwerkroutern richten können.","original_language":"deu","persons":["Christof 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Und jedes Jahr gibt es die Schmankerl danach im OpenChaos zu sehen. Wieder einmal beweist uns Tobi vom Digitale Kultur e.V. das man mit Computern auch Kunst schaffen kann. Mit lieb gewonnenen Traditionen sollte man nicht brechen. So wie sich die Demoszene traditionell zu Ostern trifft um sich in verschiedenen Wettbewerben zu messen so werden genauso traditionell einige Wochen, oder Monate, nach Ostern die besten Wettbewerbsbeitr\u0026auml;ge im Rahmen des OpenChaos gezeigt. Wie in den letzten Jahren wird der Digitale Kultur e.V. zu Gast sein und uns, eingebettet in einen launigen Vortrag, die besten Demos der Osterparty \u0026ldquo;Revision\u0026rdquo; vorstellen.\u003c/p\u003e","original_language":"deu","persons":["Tobias Heim"],"tags":["Revision","Open Chaos","C4"],"view_count":295,"promoted":false,"date":"2015-06-25T20:15:00.000+02:00","release_date":"2015-07-01T02:00:00.000+02:00","updated_at":"2026-01-06T11:30:13.267+01:00","length":7859,"duration":7859,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2015.06.revision-nachlese.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/c4.openchaos.2015.06.revision-nachlese_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/f7baee00-59a0-41ee-83e1-f89c05b4b13b-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/f7baee00-59a0-41ee-83e1-f89c05b4b13b-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2015.06.revision-nachlese","url":"https://api.media.ccc.de/public/events/f7baee00-59a0-41ee-83e1-f89c05b4b13b","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":7},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":2},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":4},{"event_id":3775,"event_guid":"f854e264-4728-472e-9e57-4dad6ea3d668","weight":2},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":4},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":2},{"event_id":3988,"event_guid":"0dfdf83e-5cc3-4443-930e-fc149a84c812","weight":4},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":2}]},{"guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","title":"U23 Abschlusspräsentation - Freifunk","subtitle":"","slug":"c4.openchaos.2014.11.u23-abschlusspraesentation-freifunk","link":"https://koeln.ccc.de/updates/2014-11-27_OC_U23.xml","description":"Derzeit findet in den Räumen des C4 wieder einmal das Jugendprojekt U23 zum Thema Freifunk statt. Das U23 spricht junge, technikbegeisterte Leute an, die Spaß daran haben, unter Anleitung in Gruppen an einer spannenden Aufgabe zu arbeiten und zu basteln.\r\n\u003cbr\u003e\r\n\u003cbr\u003e\r\nDieses Jahr beschäftigt sich das U23 mit dem Thema Freifunk. Freifunk ist eine nicht-kommerzielle Initiative für freie Funknetzwerke. Freie Netze werden von immer mehr Bürgern in Eigenregie aufgebaut und gewartet. Jeder Nutzer im Freifunk-Netz stellt seinen WLAN-Router für den Datentransfer der anderen Teilnehmer zur Verfügung.\r\n\u003cbr\u003e\r\n\u003cbr\u003e\r\nAm 27.11.2014 findet der Abschlussabend des U23 in den Räumlichkeiten des Chaos Computer Club Cologne statt. Dabei stellen die Gruppen in gemütlicher Atmosphäre vor, wie sie die Aufgabenstellung gemeistert haben und vor allem: Was dabei heraus gekommen ist.\r\n\u003cbr\u003e\r\n\u003cbr\u003e\r\nDas OpenChaos findet am Donnerstag den 27. November 2014 in den Räumlichkeiten des Chaos Computer Club Cologne statt. Beginn ist 20:00 Uhr.","original_language":"eng","persons":[],"tags":["Freifunk","U23","C4","Open Chaos"],"view_count":6578,"promoted":false,"date":"2014-11-27T20:00:00.000+01:00","release_date":"2014-12-02T01:00:00.000+01:00","updated_at":"2026-01-29T18:15:08.450+01:00","length":6732,"duration":6732,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/u23-freifunk.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/u23-freifunk-poster.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1737331b-aff9-4ff4-b577-95636f9e5e67-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1737331b-aff9-4ff4-b577-95636f9e5e67-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2014.11.u23-abschlusspraesentation-freifunk","url":"https://api.media.ccc.de/public/events/1737331b-aff9-4ff4-b577-95636f9e5e67","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":8},{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":8},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":8},{"event_id":2451,"event_guid":"746c83c2-b29b-41e7-be5b-fafdfe923a5a","weight":11},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":13},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":20},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":21},{"event_id":3034,"event_guid":"6e3c061e-495f-450b-ba96-c777c8669458","weight":4},{"event_id":3041,"event_guid":"29aaed8b-5b17-4feb-a9fc-7cc584682746","weight":6},{"event_id":3107,"event_guid":"57ef4367-5baf-40f5-84a1-89f9f9f29b4f","weight":5},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":8},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":8},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":18},{"event_id":3848,"event_guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","weight":7},{"event_id":3955,"event_guid":"b71b550a-e3a7-449d-a68d-7fce348d0a4b","weight":7},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":6},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":12},{"event_id":4706,"event_guid":"cc614df4-ff39-4475-99d5-6597e5fadc75","weight":7},{"event_id":4760,"event_guid":"b14c9516-d104-465e-8c7c-b2eae5d31f5a","weight":15},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":5},{"event_id":5252,"event_guid":"7805cae2-d664-441a-af87-555a2c5633a2","weight":7},{"event_id":5569,"event_guid":"d37bc91e-f1dd-4fbb-b793-c08b2436eecb","weight":6},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":9},{"event_id":5832,"event_guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","weight":15},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":13},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":10}]},{"guid":"e6746e7f-dca9-4265-86c7-0bef863d83a9","title":"Privatheit","subtitle":"Mehr als etwas zu verbergen","slug":"c4.openchaos.2017.04.privatheit","link":"https://koeln.ccc.de/updates/2017-04-27_OC-Privatheit.xml","description":"\u003cp\u003eWas ist Privatheit - was ist privat? Muss Privates geheim sein? Neal vom GnuPG-Projekt erkl\u0026auml;rt wozu wir Privatheit brauchen. Im April besucht uns Neal vom GnuPG-Projekt und erkl\u0026auml;rt wozu wir Privatheit brauchen.\u003c/p\u003e\r\n\u003cp\u003eNeal schreibt zu seinem Vortrag:\u003c/p\u003e\r\n\u003cp\u003e\u0026bdquo;\u003cem\u003ePrivatheit ist wichtig und sie soll verteidigt werden gegen\u0026uuml;ber Versuchen sie im Namen der Sicherheit zu opfern, zumindest behaupten das viele Linksorientierte. Aber, was genau ist Privatheit? Ist es einfach etwas zu verstecken? Und, wenn ja, sollen wir wirklich Angst haben, dass ein paar Leute die wir nicht kennen und h\u0026ouml;chstwahrscheinlich nie kennenlernen werden vielleicht so etwas wie Nacktbilder von uns sehen?\u003c/em\u003e\u003c/p\u003e\r\n\u003cp\u003e\u003cem\u003eIn diesem Vortrag, werde ich zun\u0026auml;chst versuchen Privatheit zu definieren. Ich werde behaupten, dass obwohl Privatheit oft etwas mit Geheimhaltung zu tun hat, etwas was privat ist, nicht unbedingt geheim ist (z.B. Tanz\u0026uuml;bung) und umgekehrt (z.B. Missbrauch). Ich werde dann die vier Aspekte der Privatheit nach Alan Westin erl\u0026auml;utern, und erkl\u0026auml;ren wozu man Privatheit braucht. In der zweite H\u0026auml;lfte meines Vortrags werde ich beschreiben was passieren kann, wenn wir unsere Privatdaten preisgeben bzw. wenn wir als Gesellschaft deren Erhebung erlauben, auch wenn wir angeblich nichts zu verbergen haben.\u003c/em\u003e\u0026ldquo;\u003c/p\u003e\r\n\u003cp\u003e\u003ca href=\"https://cdn.media.ccc.de/regional/koeln/open_chaos/2017/slides/1704-slides.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSlides zum Vortrag\u003c/a\u003e\u003c/p\u003e","original_language":"deu","persons":["Neal H. Walfield"],"tags":["openchaos","1704","Privatheit"],"view_count":983,"promoted":false,"date":"2017-04-27T20:00:00.000+02:00","release_date":"2017-05-02T02:00:00.000+02:00","updated_at":"2026-02-28T14:45:06.219+01:00","length":5929,"duration":5929,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1704-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1704-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/e6746e7f-dca9-4265-86c7-0bef863d83a9-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/e6746e7f-dca9-4265-86c7-0bef863d83a9-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2017.04.privatheit","url":"https://api.media.ccc.de/public/events/e6746e7f-dca9-4265-86c7-0bef863d83a9","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":1728,"event_guid":"3poSeUcpc6woNaI5dhATcQ","weight":9},{"event_id":2079,"event_guid":"f449c7b7-7c45-4cd3-9d82-7b91cae9567d","weight":12},{"event_id":2143,"event_guid":"1737331b-aff9-4ff4-b577-95636f9e5e67","weight":7},{"event_id":2408,"event_guid":"25d1ba3b-cf21-4d83-935d-d064f10a6035","weight":14},{"event_id":2451,"event_guid":"746c83c2-b29b-41e7-be5b-fafdfe923a5a","weight":23},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":11},{"event_id":2705,"event_guid":"55fccc39-c1bb-4d05-aa95-7188ad229f56","weight":11},{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":11},{"event_id":2938,"event_guid":"03c8501f-d327-4228-a9fe-2635370d25d2","weight":9},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":25},{"event_id":3501,"event_guid":"cec35be5-a1f0-496b-82c9-c7ace338b50e","weight":18},{"event_id":3565,"event_guid":"69f657a4-c06f-4865-aeff-0faf16bf6fe1","weight":23},{"event_id":3615,"event_guid":"74783236-46f4-493c-9574-1b27a44847b7","weight":12},{"event_id":3671,"event_guid":"4ef69e6a-026f-4b30-888d-af654b220a3d","weight":12},{"event_id":3695,"event_guid":"c300b194-2a85-4705-92aa-b4e789882303","weight":12},{"event_id":3775,"event_guid":"f854e264-4728-472e-9e57-4dad6ea3d668","weight":10},{"event_id":3787,"event_guid":"f3358998-1465-4445-885e-74d880be57d0","weight":45},{"event_id":3840,"event_guid":"385033fe-d217-0060-aca6-28dd05677c66","weight":8},{"event_id":3844,"event_guid":"385033fe-d217-0130-aca6-28dd05677c66","weight":6},{"event_id":3849,"event_guid":"afcad2d0-34e7-11e7-b75a-bf6c18dd9a31","weight":8},{"event_id":3850,"event_guid":"ae999450-3893-11e7-890f-9f81551c7b53","weight":16},{"event_id":3851,"event_guid":"a2b0d408-3f34-11e7-a2ff-b7e0ed5cc95f","weight":13},{"event_id":3852,"event_guid":"6c673b80-3f20-11e7-81b0-83993a7ef3dd","weight":7},{"event_id":3955,"event_guid":"b71b550a-e3a7-449d-a68d-7fce348d0a4b","weight":24},{"event_id":3988,"event_guid":"0dfdf83e-5cc3-4443-930e-fc149a84c812","weight":10},{"event_id":4485,"event_guid":"da208942-2be8-4f14-9466-ba8e7b74fca8","weight":9},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":46},{"event_id":4760,"event_guid":"b14c9516-d104-465e-8c7c-b2eae5d31f5a","weight":12},{"event_id":4763,"event_guid":"2ef3b60f-6e5c-4c23-a145-d263685ec13e","weight":6},{"event_id":4767,"event_guid":"f2ca3661-30c8-476e-9d6b-920bb20b21eb","weight":12},{"event_id":4944,"event_guid":"868fbf54-2007-4c0e-9af3-63384bed9fa6","weight":10},{"event_id":5064,"event_guid":"762f9a23-ca2c-4391-a725-8651eb5a0609","weight":8},{"event_id":5252,"event_guid":"7805cae2-d664-441a-af87-555a2c5633a2","weight":8},{"event_id":5569,"event_guid":"d37bc91e-f1dd-4fbb-b793-c08b2436eecb","weight":20},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":9},{"event_id":5722,"event_guid":"906c5611-7e85-4593-8a4e-b33dedfce19e","weight":12},{"event_id":5832,"event_guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","weight":8},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":20},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":16},{"event_id":7236,"event_guid":"e3bdda0e-c95f-4021-8500-3718a2913352","weight":9}]},{"guid":"fabfb331-4e7e-4947-b509-91d19726f87a","title":"Technologie trifft Kreativität","subtitle":"Demoszene-Jahresüberblick","slug":"c4.openchaos.2023.11.demoszene-jahresrückblick","link":"https://c3voc.de","description":"Tobi vom Digitale Kultur e.V. nimmt euch mit auf eine Reise durch das Demoszene-Jahr. 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Mit FragDenStaat.de kann jeder auf Basis\ndes Informationsfreiheitsgesetzes Dokumente von Behörden\nanfragen.\nInformationsfreiheit ist das Recht auf freien Zugang zu\namtlichen Informationen. Sie ist eines der wichtigsten\nGrundrechte in der Wissensgesellschaft, das sich aus Artikel 5\ndes Grundgesetzes zur Meinungs- und Informationsfreiheit\nergibt. Arne Semsrott von FragDenStaat berichtet über seine\nProjekte und zukünftigen Pläne.","original_language":"deu","persons":["Arne Semsrott"],"tags":["openchaos","1905","OpenChaos"],"view_count":1032,"promoted":false,"date":"2019-06-05T00:00:00.000+02:00","release_date":"2019-06-06T02:00:00.000+02:00","updated_at":"2026-02-16T20:15:12.140+01:00","length":4992,"duration":4992,"thumb_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1905-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1905-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1905-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/c4/openchaos/1905-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/c4.openchaos.2019.05.fragdenstaat","url":"https://api.media.ccc.de/public/events/bd38872d-c3ee-45d6-b3e9-a0da37e67d1a","conference_title":"OpenChaos","conference_url":"https://api.media.ccc.de/public/conferences/oc","related":[{"event_id":2796,"event_guid":"3c066b63-c764-4571-bc3b-eb8dfbb5a6d9","weight":1},{"event_id":2868,"event_guid":"0549d204-604a-46c5-92a2-e64b85aa9892","weight":1},{"event_id":2907,"event_guid":"3b16ddc9-499b-44b1-9084-b3e328daea30","weight":1},{"event_id":4808,"event_guid":"acab4111-aba7-44f7-b56e-ef805dcacd00","weight":1},{"event_id":4931,"event_guid":"8720ee73-f47b-4594-bfab-26206c0d6cfc","weight":6},{"event_id":5389,"event_guid":"7de8a55e-c46b-504d-babe-4a25730417cd","weight":1},{"event_id":5832,"event_guid":"fcae0fe2-fc3b-466f-85d5-4777cd46099d","weight":3},{"event_id":6086,"event_guid":"58f65666-0f8f-436d-b1eb-095ba70ac203","weight":2},{"event_id":6115,"event_guid":"93b7d8a6-345b-405a-a3f2-0dc09ddd2e28","weight":9},{"event_id":6233,"event_guid":"9fa9eae0-2d2f-4bce-a7f5-1983003b3db7","weight":15},{"event_id":6634,"event_guid":"71bdcf60-c567-4cf6-94f4-5681b1d008b4","weight":6},{"event_id":6640,"event_guid":"55045346-5af9-56e9-8fb2-0c23c5bfb225","weight":1},{"event_id":6879,"event_guid":"ca68a158-717c-4626-9fad-783b091e9302","weight":9},{"event_id":6902,"event_guid":"1679ccc6-2020-53b0-aaa5-670302ae881f","weight":1},{"event_id":7025,"event_guid":"c127467f-82bf-4896-b473-cd81bf055fc5","weight":9},{"event_id":7110,"event_guid":"3e7f1444-b72c-594f-b033-d96b21c1961c","weight":9},{"event_id":7111,"event_guid":"a9f845a6-6b27-5331-835b-9291de08cd1f","weight":2},{"event_id":7130,"event_guid":"7bf66344-5900-5a5e-8657-8e1d20be92f5","weight":3},{"event_id":7132,"event_guid":"dd84485f-993d-5715-952e-511a6d93dbbf","weight":1},{"event_id":7133,"event_guid":"65da5605-4c79-57cc-8114-ab413d97189f","weight":7},{"event_id":7134,"event_guid":"8f035c60-97b4-53f1-b2de-32e65f6f2844","weight":9},{"event_id":7143,"event_guid":"95fb5f56-4e01-5a6f-8fcd-cd6a235c08e0","weight":6},{"event_id":7146,"event_guid":"da767a60-2f04-511e-bcc8-9cb136de77f7","weight":3},{"event_id":7147,"event_guid":"5fe8bbbe-116b-5d42-ad17-90208755ce30","weight":6},{"event_id":7153,"event_guid":"e809e177-1a90-53f1-bf93-1f0aeb4c7caf","weight":1},{"event_id":7155,"event_guid":"4376339b-49f6-5b8e-ab5a-26ecd6233e5c","weight":1},{"event_id":7164,"event_guid":"51bb4d60-7e36-454f-8554-1ee5762a9ac5","weight":1},{"event_id":7171,"event_guid":"ad510c6c-6ab1-47eb-9431-24f02cefb05b","weight":1},{"event_id":7172,"event_guid":"893ffd57-c8e2-45be-93a6-e1030b0dc280","weight":2},{"event_id":7175,"event_guid":"ab6e2c08-652f-426f-9c8d-c694d0a337bd","weight":1},{"event_id":7180,"event_guid":"562d487d-d84a-4fc7-98a5-5267710587d9","weight":16},{"event_id":7181,"event_guid":"456fb60c-5ce7-11e8-be47-1fb2912eb8100","weight":13},{"event_id":7236,"event_guid":"e3bdda0e-c95f-4021-8500-3718a2913352","weight":39},{"event_id":7238,"event_guid":"2f82bad2-97cb-59a2-b1da-428048e5baab","weight":6},{"event_id":7255,"event_guid":"265fd581-ed2b-5985-879c-0d51c45c70c8","weight":6},{"event_id":7256,"event_guid":"ccab9927-22fe-52a3-a14a-e33f5dffb485","weight":7},{"event_id":7264,"event_guid":"6ceb890a-a419-5fc6-bc42-3ffd7fbd73f7","weight":8}]},{"guid":"6260c933-5ab0-4c58-b335-ee419b180712","title":"Gaby Weber und die Monsanto-Übernahme","subtitle":null,"slug":"c4.openchaos.2019.09.monsanto","link":"https://c3voc.de","description":"Das Informationsfreiheitsgesetz (IFG) regelt den Auskunftsanspruch gegenüber staatlichen Stellen, nicht gegenüber den privaten Firmen.\nGaby Webers Anwalt Raphael Thomas hat jetzt Klage gegen die Bayer AG wegen Offenlegung ihrer Risikobewertung der Monsanto-Übernahme (Due Diligence) eingereicht.\nEs geht ihr also nicht um Geschäftsgeheimnisse sondern nur darum, ob eventuell wegen einer falschen Risikoanalyse der Steuerzahler zur Kasse gebeten werden kann,\nwenn nämlich angesichts der Prozesslawine gegen den Rechtsnachfolger von Monsanto - die Bayer AG - deren Rücklagen und Versicherungen nicht ausreichen,\ndie Regierung den Konzern für „too big too fail“ erklärt und die Verluste von der Gesellschaft getragen werden. Bereits jetzt ist der Börsenwert des Konzerns auf ein Drittel gefallen.\nWelchen Nachteil dem Unternehmen mit einer Veröffentlichung des Due Diligence Reports entstehen würde, hat Bayer nicht bekannt gegeben;\nCEO Werner Baumann könnte sich so gegen den Vorwurf der Fahrlässigkeit bzw. grober Unterlassungen verteidigen.\nDas kann er offensichtlich nicht. Die Bayer AG hat mit ihrer Vertretung die Anwaltskanzlei Redeker \u0026 Co. beauftragt.\nDank der weiteren Nachforschung von Gaby Weber sind in der Firmenübernahme unangenehme Details ans Licht gekommen.\nDie Europäische Zentralbank hat unter dem Auftrag von Jens Weidmann, Präsident der Deutschen Bundesbank, über das Wertpapierkaufprogramm CSPP (Corporate Sector Purchase Programme)\neinen größeren Teil der Übernahme von Monsanto finanziert. 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