HollowGraph Malware Hides C2 and Stolen Files in Microsoft 365 Events… | HappeningNow.news
Published Date: July 21, 2026

Cybersecurity · 1 views

HollowGraph Malware Hides C2 and Stolen Files in Microsoft 365 Events Dated 2050

A newly discovered espionage implant has been using a hijacked Microsoft 365 calendar as its command channel, planting operator instructi…

Source The Hacker News AI Summary Updated 14h 41m ago
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AI Summary

A newly discovered espionage implant has been using a hijacked Microsoft 365 calendar as its command channel, planting operator instructions and smuggling out stolen files as attachments on calendar events dated to the year 2050. Group-IB, which named the malware HollowGraph, says the approach moves tasking and stolen data through legitimate Microsoft Graph…

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