New HollowGraph malware uses Microsoft Graph for stealthy C2 comms | HappeningNow.news
Published Date: July 21, 2026

Cybersecurity · 1 views

New HollowGraph malware uses Microsoft Graph for stealthy C2 comms

A malicious component dubbed HollowGraph uses the calendar feature in compromised Microsoft 365 mailboxes as a command-and-control channe…

Source BleepingComputer AI Summary Updated 12h 33m ago
Story intelligence Beta
Freshness Aging Updated 12h 33m ago
Confidence Limited Single-outlet story
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Read time 1 min ~27 words

AI Summary

A malicious component dubbed HollowGraph uses the calendar feature in compromised Microsoft 365 mailboxes as a command-and-control channel to receive attacker commands and exfiltrate stolen data. [...]

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