Finally a good #security analysis of #Telegram.
Check out the website[0] and the paper published in the top security and privacy conference, IEEE Security and Privacy[1]:
Martin R. Albrecht, Lenka Mareková, Kenneth G. Paterson, Igors Stepanovs: Four Attacks and a Proof for Telegram. To appear at IEEE Symposium on Security and Privacy 2022.
[0] https://mtpsym.github.io/
[1] https://mtpsym.github.io/paper.pdf