FBI, South Korea warn of Gunra ransomware gang targeting critical infrastructure

The FBI and South Korean authorities warned that the Gunra ransomware gang exploits known firewall vulnerabilities to target critical infrastructure sectors including healthcare, finance, and government globally. The group demands ransoms over $10 million and has expanded its operations using a ransomware-as-a-service model while developing variants for Windows and Linux.

This Wire brief sits within Fusion42's coverage of Cybersecurity and Security Infrastructure, and 2 sources have reported it between 10 Aug 2026 and 11 Aug 2026.