You should really search, I tried to compile all I could find, but I’m here to stop using tg, not going back to tg and scroll Russian opposition channels for all the mentions of stuff like that

There are some articles in English that describe the events, but most of them are in Russian

Also, from the search it’s really hard to find anything because a lot of stuff about the war

Here are a few topics:

1. Telegram leaking location
2. Telegram leaking IP address
3. Deleted many years ago chats/messages were recovered remotely (just recently)
4. Telegram is delaying source code publishing
5. The source code’s build has a different hash and a few mb smaller than the release
6. Their data sharing reports are empty although they were openly giving data to authorities in e.g. Germany

Compilation of different technical vulnerabilities and issues of telegram(in Russian):

• https://habr.com/ru/articles/206900/
• https://habr.com/ru/articles/252911/
• https://xakep.ru/2018/10/31/telegram-plain-text-chats/
• https://habr.com/ru/articles/460655/
• https://habr.com/ru/articles/744316/

And in general, Russian government unbanned tg after it realized it can read it. I wouldn’t trust anything that was unbanned in Russia or China

And one more article that lists issues of telegram: https://emisare.medium.com/так-ли-безопасен-telegram-f5a3128a1311

I’m already tired of doing this, I didn’t even start on activists and how they get hacked and stuff