{"guid":"e5303844-639b-5196-b591-9c4fb47a24a4","title":"Warum selbst Signal bei Google und Apple anklopft","subtitle":null,"slug":"clt26-143-warum-selbst-signal-bei-google-und-apple-anklopft","link":"https://chemnitzer.linux-tage.de/2026/de/programm/beitrag/143","description":"Ich wollte nur Zulip-Notifications auf dem Handy. Also habe ich angefangen, selbst was zu bauen – und bin in ein Rabbit Hole gefallen.\n\nDieser Vortrag erzählt die Geschichte, wie ich versucht habe, ein Problem zu lösen – und dabei verstanden habe, wie Push-Notifications wirklich funktionieren. Warum mein erster Ansatz nicht skaliert. Warum fast jede App Firebase oder APNs nutzt. Warum selbst Signal bei Google anklopft. Und warum das seit dem Wyden-Brief von 2023 ein dokumentiertes Privacy-Problem ist: »We kill people based on metadata.«\n\nIch zeige, welche Alternativen es mit UnifiedPush und ntfy gibt, wie ich eine Bridge für Zulip gebaut habe, und warum das gleiche Problem auch für Prometheus-Alerts, Grafana-Notifications und CI/CD-Pipelines gilt. Und was das mit digitaler Souveränität zu tun hat.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"deu","persons":["Merle Fäller"],"view_count":1065,"promoted":false,"date":"2026-03-29T11:00:00.000+02:00","release_date":"2026-03-29T00:00:00.000+01:00","updated_at":"2026-04-28T17:00:04.053+02:00","tags":["68","2026","clt26","Vortrag","V7","clt26-deu","Day 2"],"length":2703,"duration":2703,"thumb_url":"https://static.media.ccc.de/media/events/clt/2026/68-e5303844-639b-5196-b591-9c4fb47a24a4.jpg","poster_url":"https://static.media.ccc.de/media/events/clt/2026/68-e5303844-639b-5196-b591-9c4fb47a24a4_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/clt/2026/68-e5303844-639b-5196-b591-9c4fb47a24a4.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/clt/2026/68-e5303844-639b-5196-b591-9c4fb47a24a4.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/clt26-143-warum-selbst-signal-bei-google-und-apple-anklopft","url":"https://media.ccc.de/public/events/e5303844-639b-5196-b591-9c4fb47a24a4","conference_title":"Chemnitzer Linux-Tage 2026","conference_url":"https://media.ccc.de/public/conferences/clt26","related":[],"recordings":[{"size":171,"length":2703,"mime_type":"video/webm","language":"deu","filename":"clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_webm-hd.webm","state":"new","folder":"webm-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2026-03-30T00:17:15.973+02:00","recording_url":"https://cdn.media.ccc.de/events/clt/2026/webm-hd/clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_webm-hd.webm","url":"https://media.ccc.de/public/recordings/98044","event_url":"https://media.ccc.de/public/events/e5303844-639b-5196-b591-9c4fb47a24a4","conference_url":"https://media.ccc.de/public/conferences/clt26"},{"size":80,"length":2703,"mime_type":"video/webm","language":"deu","filename":"clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_webm-sd.webm","state":"new","folder":"webm-sd","high_quality":false,"width":720,"height":576,"updated_at":"2026-03-29T21:24:52.825+02:00","recording_url":"https://cdn.media.ccc.de/events/clt/2026/webm-sd/clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_webm-sd.webm","url":"https://media.ccc.de/public/recordings/97993","event_url":"https://media.ccc.de/public/events/e5303844-639b-5196-b591-9c4fb47a24a4","conference_url":"https://media.ccc.de/public/conferences/clt26"},{"size":25,"length":2703,"mime_type":"audio/opus","language":"deu","filename":"clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_opus.opus","state":"new","folder":"opus","high_quality":false,"width":0,"height":0,"updated_at":"2026-03-29T19:37:04.376+02:00","recording_url":"https://cdn.media.ccc.de/events/clt/2026/opus/clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_opus.opus","url":"https://media.ccc.de/public/recordings/97882","event_url":"https://media.ccc.de/public/events/e5303844-639b-5196-b591-9c4fb47a24a4","conference_url":"https://media.ccc.de/public/conferences/clt26"},{"size":41,"length":2703,"mime_type":"audio/mpeg","language":"deu","filename":"clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_mp3.mp3","state":"new","folder":"mp3","high_quality":false,"width":0,"height":0,"updated_at":"2026-03-29T19:37:00.474+02:00","recording_url":"https://cdn.media.ccc.de/events/clt/2026/mp3/clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_mp3.mp3","url":"https://media.ccc.de/public/recordings/97881","event_url":"https://media.ccc.de/public/events/e5303844-639b-5196-b591-9c4fb47a24a4","conference_url":"https://media.ccc.de/public/conferences/clt26"},{"size":63,"length":2703,"mime_type":"video/mp4","language":"deu","filename":"clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_sd.mp4","state":"new","folder":"h264-sd","high_quality":false,"width":720,"height":576,"updated_at":"2026-03-29T19:18:59.960+02:00","recording_url":"https://cdn.media.ccc.de/events/clt/2026/h264-sd/clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_sd.mp4","url":"https://media.ccc.de/public/recordings/97856","event_url":"https://media.ccc.de/public/events/e5303844-639b-5196-b591-9c4fb47a24a4","conference_url":"https://media.ccc.de/public/conferences/clt26"},{"size":128,"length":2703,"mime_type":"video/mp4","language":"deu","filename":"clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_hd.mp4","state":"new","folder":"h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2026-03-29T17:42:41.270+02:00","recording_url":"https://cdn.media.ccc.de/events/clt/2026/h264-hd/clt26-68-deu-Warum_selbst_Signal_bei_Google_und_Apple_anklopft_hd.mp4","url":"https://media.ccc.de/public/recordings/97832","event_url":"https://media.ccc.de/public/events/e5303844-639b-5196-b591-9c4fb47a24a4","conference_url":"https://media.ccc.de/public/conferences/clt26"}]}