id: 2122
uid: 1w60k
insdate: 2026-07-20 18:10:05
title: New HollowGraph malware uses Microsoft Graph for stealthy C2 comms
additional: 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. [...]
category: Cybersecurity
md5:
guid: https://www.bleepingcomputer.com/news/security/new-hollowgraph-malware-uses-microsoft-graph-for-stealthy-c2-comms/
source_url: https://www.bleepingcomputer.com/news/security/new-hollowgraph-malware-uses-microsoft-graph-for-stealthy-c2-comms/
updated:
image:
author_name: Bill Toulas
author_link: