cybersecurite4.7 %Ransomware attacks in Japan rose by 4.7% in the first half of 2026

Ransomware attacks heavily target Japanese SMEs in 2026

Ransomware attacks in Japan rose by 4.7% in the first half of 2026.

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80 %

80% of victims are SMEs with capital under 1 billion yen

The fact

The Gentlemen group leads, with data leaks doubling between January and July.

80% of victims are SMEs with capital under 1 billion yen.

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Auto-synthesis from 1 media source · identified on September 17, 2026