Mmastodon TechnologyCybersecurity first seen 10 h ago, last 10 h ago, peak #11
US, UK and Dutch agencies warn of HEAVYGRAM Windows spyware
Original: The FBI, UK NCSC, and Dutch AIVD published a joint advisory on HEAVYGRAM — Windows spyware with no C2 server. Every infe
The FBI, the UK's NCSC and the Dutch AIVD have issued a joint advisory on HEAVYGRAM, Windows spyware that operates without a command-and-control server. Instead, each infected machine is paired with its own Telegram bot, letting attackers control devices through chat messages. Infection begins with a single malicious file sent in a message, and security experts are urging Windows users to be cautious with unexpected attachments.
Why now: A rare joint advisory from three Western intelligence agencies about novel Telegram-controlled spyware raises fresh concern over messaging-app-based attacks.
Evidence
- The FBI, UK NCSC, and Dutch AIVD published a joint advisory on HEAVYGRAM — Windows spyware with no C2 server. Every infected machine gets its own Telegram bot; operators run it through chat messages. The whole attack starts with one file in one message. https://… · relayshieldadmin@infosec.exchange · 1
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