Flutterby™! : Yeah, Telegram is readable by the FSB

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Yeah, Telegram is readable by the FSB

2026-05-19 01:05:13.453949+02 by Dan Lyke 0 comments

Michał "rysiek" Woźniak · 🇺🇦 @rysiek@mstdn.social

Independent audit confirms my analysis of Telegram's protocol from last year: https://istories.media/en/stor...endent-review-confirms-critical- telegram-vulnerability/

The audit was ordered by one of the main characters of IStories' investigation into Telegram's network infrastructure, man called Vedeneev. My analysis was done in connection with that journalistic investigation.

Presumably, Vedeneev ordered the audit in order to discredit my analysis and Istories' investigation. Instead, the report confirms my findings.

and Michał "rysiek" Woźniak · 🇺🇦 @rysiek@mstdn.social

You can find my original analysis here:
https://rys.io/en/179.html

tl;dr: for every device, Telegram generates a long-term identifier, auth_key_id, that is then prepended *cleartext* (or at best, trivially obfuscated) to every encrypted packet; this allows anyone with sufficient visibility into global Telegram traffic to spy on its users.

IStories reporting from last year.

[ related topics: broadband Journalism and Media Cryptography ]

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