Telegram account takeover is everywhere: one wrong click and your account is gone, even with 2FA on. Sessions is an always-on guard. Whitelist your real devices, arm it, and any new login that isn't you gets kicked automatically, around the clock. Hostile 2FA-password resets get auto-declined. Nothing else. We built a minimal MTProto client so at the code level it can only do exactly that. It's open source, running in an AWS Nitro enclave with live attestation you can verify yourself.