New HollowGraph Malware Abuses Microsoft 365 Calendar for C&C… | HappeningNow.news

Cybersecurity · 49 views

New HollowGraph Malware Abuses Microsoft 365 Calendar for C&C Communication

Source Summary Published July 21, 2026 Brief Under 1 min brief
Story intelligence
Coverage Single outlet Single-outlet story
Views 49 Community interest
Brief read Under 1 min brief 16 words

Summary

Part of a larger toolkit, HollowGraph uses a compromised 365 account’s calendar as a two-way dead-drop.

Read original at SecurityWeek

Coverage Context

Part of Hollowgraph coverage 3 tracked stories

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