Many users keep passwords, documents and wallet addresses in Telegram chats, creating a consolidated archive of sensitive personal and work data.

What people keep in chats

Saved messages often contain passwords, screenshots of documents, wallet addresses and spreadsheets meant for later use, forming a single point of failure.

• Work chats where deals were agreed and files exchanged over years.
• Contacts accumulated for many years, some without full names.
• Conversations and backups that may be irrecoverable after account loss.

Scale of the threat

According to F6, a single criminal group hijacked 1.5 million Telegram accounts in the first half of 2025, demonstrating large-scale compromise.

Two-factor authentication does not always prevent theft; founders from XFounders lost control of an account despite 2FA, with scammers occupying it for 3 days before the account had to be deleted.

Session monitoring and recovery tools

In response, developers created TG Cerber, a service that connects to an account as a separate device and monitors sessions continuously.

If an unrecognized device signs in, the system asks the owner to confirm the session and will automatically terminate the new session if it goes unconfirmed within a short window.

Complementary features, referred to as Vault, aim to preserve stored data so that losing access to an account does not erase years of archived content.

Assessing and reducing risk

Services offer a free diagnostic that reports an account's risk score, active sessions and primary vulnerabilities, and typically takes about one minute to run.

Users are advised to review active sessions, secure recovery methods and backup important documents outside a single messaging account to limit potential losses.