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Secret Chats. Create additional one-on-one chats with your contacts that use end-to-end encryption and are not stored in or synced with the cloud – only locally on the two participating devices.
Secret Chats are device and session-specific, meaning they don’t appear on a user’s other devices, and will be cancelled if one of the participants logs out.
These chats prevent forwarding messages and have extra privacy features – like a self-destruct timer that erases messages after they are read, as well as screenshot alerts on iOS and screenshot blocking on Android. You can identify Secret Chats from the
End-to-end encryption is provided by Telegram’s MTProto 2.0 protocol, which has been independently verified by thousands of researchers.