90% of Telegram chats live in cleartext on their servers; no one would need to go to those lengths to get chat data from them.
Telegram chats not being end-to-end crypted are encrypted at rest on their servers. In this case telegram definitely controls the encryption keys but distributes them across jurisdictions to mitigate some risks.
Telegram chats not being end-to-end crypted are encrypted at rest on their servers. In this case telegram definitely controls the encryption keys but distributes them across jurisdictions to mitigate some risks.