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HOLLOWGRAPH malware turns Microsoft 365 calendars into an espionage channel

Objectivity score: 51
HOLLOWGRAPH malware turns Microsoft 365 calendars into an espionage channel Microsoft 365 calendars have become a hiding place for espionage malware, with commands and stolen files stashed inside appointments dated to the year 2050, researchers from Group-IB discovered. Targeted campaign tied to Iranian espionage activity The malware, which Group-IB calls HOLLOWGRAPH, is one component of a bigger ...
HOLLOWGRAPH malware turns Microsoft 365 calendars into an espionage channel | Huntaegis