Ransomware attacks rise in Japan, small businesses hardest hit
Ransomware attacks in Japan rose by about 4.7% in the first half of 2026 compared to the same period last year, with 90 organizations affected according to Cisco Talos. Most victims were small- and medium-sized enterprises, as attackers increasingly targeted these organizations. The Gentlemen group was the most active, with its leak site activity more than doubling. Qilin, another major group, reportedly used AI to streamline operations.
- 90 ransomware incidents reported January to July 2026
- Incidents mostly hit firms under JPY 1 billion capital
- Manufacturing sector accounted for 34% of attacks
- The Gentlemen group most frequently identified
- Qilin group reportedly used AI for attacks
Sources covering this
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