{"ok":true,"trend":{"id":857264,"platform":"mastodon","region":"global","key":"how to hack time, with c2pa https://www.da.vidbuchanan.co.uk/blog/hacking-time.html # security # cryptography # tech","title":"How to Hack Time, With C2PA https://www.da.vidbuchanan.co.uk/blog/hacking-time.html # Security # Cryptography # Tech","url":"https://www.da.vidbuchanan.co.uk/blog/hacking-time.html","first_seen":"2026-10-03T12:09:54.790208Z","last_seen":"2026-10-03T12:09:54.790208Z","last_rank":11,"peak_rank":11,"last_volume":2,"peak_volume":2,"seen_count":1,"score":0.7909375,"category_hint":"technology","section":"technology","category":"technology","summary":"Security researcher David Buchanan has published a write-up describing how the C2PA content-provenance standard can be manipulated to forge or misrepresent timestamps, in a piece he calls \"How to Hack Time, With C2PA\". The post covers cryptographic weaknesses in how signed time claims are handled, sparking discussion among security and cryptography practitioners about the reliability of provenance metadata in media authentication.","why":"A newly published technical write-up exposing a weakness in C2PA, a standard widely promoted for authenticating media, naturally draws attention from the security community.","tone":"neutral","entities":["David Buchanan","C2PA"],"summarized_at":"2026-10-03T12:10:32.877495Z","meta":{"tag":"tech","via":"scan","kind":"status","lang":"en","instance":"mastodon.social","tag_uses":1244},"nw":null,"promo":null,"kind":null,"importance":null,"hidden":false,"hide_reason":null,"judged_at":null,"title_en":"Researcher shows C2PA content credentials can be tricked on timestamps","section_name":"Technology","category_name":"Technology","timeline":[{"captured_at":"2026-10-03T12:09:54.790208Z","rank":11,"volume":2}],"posts":[{"platform":"mastodon","url":"https://www.da.vidbuchanan.co.uk/blog/hacking-time.html","author":"lobsters@robot.villas","title":null,"snippet":"How to Hack Time, With C2PA https://www.da.vidbuchanan.co.uk/blog/hacking-time.html # Security # Cryptography # Tech","posted_at":"2026-10-03T11:58:14Z","likes":2}],"elsewhere":[],"window":"7d"}}