HollowGraph uses Microsoft 365 calendar events dated to 2050 to receive commands and exfiltrate encrypted files through ...

The HollowGraph malware abuses Microsoft Graph API and a compromised 365 account’s calendar for C&C communication.

Researchers have linked HollowGraph malware to the Cavern framework after discovering its use of Microsoft 365 calendars and ...

A malicious component dubbed HollowGraph uses the calendar feature in compromised Microsoft 365 mailboxes as a ...

Nation-state espionage operations are increasingly using native Microsoft services to host their command-and-control (C2) needs. A number of unrelated groups in recent years have all come to the same ...

Before installation, it’s crucial to understand that Microsoft Graph is a RESTful web API that integrates various Microsoft services. You only need to authenticate once to access data across these ...