OP 21 July, 2026 - 06:45 PM
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 channel to receive attacker commands and exfiltrate stolen data.
Key facts
Source: BleepingComputer
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.
Key facts
- Affects: Microsoft 365
Source: BleepingComputer
![[Image: rep.gif]](https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fi.postimg.cc%2FwxnXnxmk%2Frep.gif)
![[Image: h9Ab7uN.png]](https://i.imgur.com/h9Ab7uN.png)