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

Cybersecurity · 29 views

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

Part of a larger toolkit, HollowGraph uses a compromised 365 account’s calendar as a two-way dead-drop. The post New HollowGraph Malware Abuses Microsoft 365 Calendar for C&C Communication appeared first on SecurityWeek .

Source Summary Published July 21, 2026 Brief Under 1 min brief
Story intelligence
Coverage Single outlet Single-outlet story
Views 29 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
Explore Hollowgraph

More from Cybersecurity

Continue reading recent Cybersecurity coverage

Support HappeningNow

Independent AI-powered news analysis is reader-supported. Your contribution helps cover infrastructure, summaries, and continued platform development.

Support HappeningNow

Report an issue with this page