In light of recent cases of AI agents posing cybersecurity risks, Prime Minister of Japan Takaichi Sanae announced Tuesday that key parts of the 2025 Japan cybersecurity laws will take effect from October 1 that will include cybersecurity council and introduction of mandatory asset reporting and incident reporting.
In a post on X, PM Takaichi informed that parts of the “Act on Strengthening Cybersecurity Measures” and the “Act on Supplementary Provisions to the Act on Strengthening Cybersecurity Measures,” which were enacted in last year’s ordinary session of the Diet, will come into effect from October 1.
近年、サイバー攻撃は急速に巧妙化・高度化しており、国家を背景とする攻撃グループによる活動も活発化しています。
こうした情勢の中、明日（10/1）、昨年の通常国会で成立した『サイバー対処能力強化法』及び『サイバー対処能力強化法整備法』の一部が施行されますので、その内容をご紹介します。…
— 高市早苗 (@takaichi_sanae) September 30, 2026
“Under the “Act on Strengthening Cybersecurity Measures,” a new framework for “strengthening public-private partnerships” will be established, including the newly created “Cybersecurity Council,” as well as the introduction of mandatory “asset reporting” and “incident reporting,” wrote PM Takaishi on X.
The Prime Minister also informed that the Cybersecurity Council will bring together ministries, local governments and operators of power, gas and other critical infrastructure.
“Through the council, proactive information sharing—including threat intelligence obtained by the national government—will become possible, enabling joint public-private efforts to prevent and mitigate damage from cyber attacks,” said PM Takaishi.
Police in Japan recorded a record 123 ransomware cases in the first half of 2026. Suspicious probes rose more than 50 percent year-on-year. Groups linked to China, Russia and North Korea have repeatedly targeted Japanese networks.
Takaichi said no single country can meet the threat alone and called for closer work with allies. She pledged ongoing improvements to protect daily life, economic activity and national interests. The remaining communications-monitoring provisions of the laws are scheduled for later implementation.
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