MTProto 2.0

A transport protocol developed by Telegram and audited by cryptography experts. AES-256-IGE and RSA-2048 algorithms.

End-to-end encryption

Secret chats are protected with E2E encryption based on the Diffie-Hellman algorithm. Only you and your conversation partner can read them.

2FA and Passcode

Additional password protection beyond the SMS code. Native app lock (Face ID / Touch ID / PIN).

Active session control

See all devices connected to your account and remotely sign out at any time.

Auto-delete

Auto-clearing timers for chats, from 1 day to 1 month. Self-destruct media.

Reproducible Builds

Verifiable builds via F-Droid and GitHub Actions β€” every release fully matches its source code.

Technical details

Cryptographic standards

Audits and certifications

Independently verified

Cure53 Audit (2024)

Complete code audit by the Berlin-based security firm. No critical vulnerabilities found.

OWASP MASVS L2

Compliance with the Mobile Application Security Verification Standard at level L2.

ISO/IEC 27001

Information security management system certification for current operational processes.

Found a vulnerability?

Report it through our Bug Bounty program β€” we respond promptly and pay rewards for significant findings.