Researchers have linked HollowGraph malware to the Cavern framework after discovering its use of Microsoft 365 calendars and Microsoft Graph APIs as a stealthy C2 channel


https://www.infosecurity-magazine.com/news/hollowgraph-microsoft-calendars/
Researchers have linked HollowGraph malware to the Cavern framework after discovering its use of Microsoft 365 calendars and Microsoft Graph APIs as a stealthy C2 channel
Mon, 20 Jul 2026 12:30:00 GMT
https://www.infosecurity-magazine.com/news/hollowgraph-microsoft-calendars/

Source: InfosecMagazine
Source Link: https://www.infosecurity-magazine.com/news/hollowgraph-microsoft-calendars/