But because group chats and the channel features are not end-to-end encrypted, Galperin said user privacy is potentially under threat. Sebi said data, emails and other documents are being retrieved from the seized devices and detailed investigation is in progress. In 2018, Russia banned Telegram although it reversed the prohibition two years later. It is unclear who runs the account, although Russia's official Ministry of Foreign Affairs Twitter account promoted the Telegram channel on Saturday and claimed it was operated by "a group of experts & journalists." Telegram does offer end-to-end encrypted communications through Secret Chats, but this is not the default setting. Standard conversations use the MTProto method, enabling server-client encryption but with them stored on the server for ease-of-access. This makes using Telegram across multiple devices simple, but also means that the regular Telegram chats you’re having with folks are not as secure as you may believe.
from ms