Check your calendars for entries far into the future - especially if you're an Israeli entity.

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

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

The targeted espionage tool hides commands and stolen files inside calendar events while using legitimate Microsoft cloud traffic to evade detection.

Microsoft 365 calendars have become the latest hiding place for espionage malware, with attackers stashing commands and ...

There’s a new phishing scam that’s sneaking past inbox filters in unexpected ways. Instead of sending suspicious links or obvious malware, this one uses something most people trust: calendar invites.