Belsen group

In 2025, the cyber security landscape was shaken by the official debut of the Belsen Group – a new group that exploited over 15,000 vulnerable configurations of FortiNet firewalls in 144 countries. This event not only highlights the risks associated with known vulnerabilities but also serves as a lesson about the importance of compromise assessments and prompt remediation. 

The Belsen Group entered the cyber scene with a post on the dark web stating: