ended7월 21일· 1 sources
HollowGraph Malware Uses Microsoft 365 Calendar Events as Dead-Drop C2 Channel
Why it matters
What Happened On July 20, 2026, cybersecurity firm Group-IB disclosed a new espionage implant dubbed HollowGraph that hijacks compromised Microsoft 365 mailboxes to run a command-and-control (C2) chan...
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