Ransomware in Japan: The Gentlemen Infrastructure and Qilin's AI Use

Ransomware attacks in Japan slightly increased in early 2026, with The Gentlemen leveraging Ransomware-as-a-Service and Qilin employing generative AI for attack script creation. These groups target small- and medium-sized enterprises across various sectors using complex multi-stage tactics including network tunneling and lateral movement.

This Wire brief sits within Fusion42's coverage of Cybersecurity.