Government-linked hackers have targeted Iranian journalists, activists and other people, breaching Telegram accounts and absconding with 15 million phone numbers and IDs belonging to Iranian citizens.

Telegram has fought back against researcher claims that Iranian cyberattackers have managed to compromise at least a dozen accounts on the secure messaging service and identified the phone numbers of ...

A sophisticated phishing campaign on Telegram is raising the bar. It doesn’t break anything and doesn’t spoof the app, it manipulates Telegram’s official authentication until the victim “approves” the ...

A hacker with access to a database of over 500 million Facebook profiles uses a Telegram bot to reveal a Facebook users' phone number or the Facebook ID associated with a known phone number. The hack ...

A Telegram for Android zero-day vulnerability dubbed 'EvilVideo' allowed attackers to send malicious Android APK payloads disguised as video files. A threat actor named 'Ancryno' first began selling ...