ACCOUNT PROTECTION

Telegram provides the way to see all devices/apps where your account is logged in. Such logins are called "Active sessions". "Current session" is an active session from which you look at active sessions list.

You can open active sessions list in 3 different ways:
1. Settings / Devices.
2. Settings / Privacy and Security / Active sessions.
3. tg://settings/devices.

On the top of the screen there is current session, on the bottom - all active sessions. If you want to stop using your account on any device/app, tap on it to terminate corresponding session.

Please note: if your current session started less than 24 hours ago, you can't terminate any sessions from current one. Wait for 24 hours since current session started.

You can also protect your account by setting two-step verification password. More details are on official Telegram website: https://telegram.org/blog/sessions-and-2-step-verification.