https://japancyberwatch.com Independent English-language coverage of cybersecurity in Japan: ransomware and data breaches at Japanese organizations, threat actors targeting Japan, and Japanese cyber policy, sourced from Japanese primary materials. en https://japancyberwatch.com/articles/japan-active-cyber-defense-law https://japancyberwatch.com/articles/japan-active-cyber-defense-law From October 1, 2026, Japan's critical infrastructure operators must report cyber incidents, and police gain powers to neutralize attack infrastructure. What the law actually does, how it is misread in Japan, and what it means for foreign vendors. Thu, 24 Sep 2026 00:00:00 GMT