How could the wave of cyberattacks in Japan affect the National Cybersecurity Office?
The national cyber crisis may force the National Cybersecurity Office to expand its operational mandate. The wave of cyberattacks, which saw Japan ranked second only to Taiwan as the most frequently affected by cyberthreats in Asia in 2026, has exposed significant vulnerabilities in the nation's infrastructure. In response to this crisis, the government has introduced a new cyberdefence law that allows national police and military to monitor and disable foreign servers to protect national security interests. The National Cybersecurity Office, as a key government agency, would be responsible for coordinating the implementation of these new legal requirements, such as mandatory breach reporting for companies, and issuing updated guidelines on handling personnel information, thereby expanding its operational scope.
- Effect
- Strong negative
- How direct
- Stated in the reporting
- When
- Within weeks
- The story
- Still developing
How it reaches National Cybersecurity Office
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Microsoft published a report detailing a wave of cyberattacks across Japan over the past few weeks, affecting virtually every industry and government service. Masaaki Taira, who leads a cybersecurity committee within the Liberal Democratic Party, declared Japan was in a “state of emergency in cyberspace”. These attacks have involved tampering with servers, taking local government websites offline, and accessing large amounts of consumer data.
The full event1independent outlet -
Microsoft's report detailed a wave of cyberattacks in Japan, which left virtually no industry untouched and resulted in 600 reported cyberattacks in the first nine months of 2026. This crisis exposed that Japan's cybersecurity infrastructure is underdeveloped, despite being the world's fourth-largest economy.
1 report connects these two. Brind only summarizes; follow a link to read the reporting itself.
- thestar.com.my Yesterday
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cybersecurity office of the Japanese government
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The facts so far
As reported. Each one links to where it comes from.
- Japan was second only to Taiwan as the most frequently affected by cyberthreats in Asia in 2026, according to a Microsoft report.thestar.com.my
- A study found 600 cyberattacks were reported in Japan in the first nine months of 2026, more than the total number in 2025.thestar.com.my
- A new cyberdefence law took effect earlier in October that makes it mandatory for companies to report breaches.thestar.com.my
- The new law allows the national police and Japan’s military to monitor and even disable foreign servers and infrastructure.thestar.com.my
Why it matters
The severity of the cyberattacks puts Japan's national security and economic stability at risk. With its cybersecurity infrastructure deemed underdeveloped by experts, the country is highly vulnerable to ransomware attacks and data leaks, which have already affected local governments and major companies.
This crisis is part of a global trend where AI is turbocharging the work of hackers, making phishing campaigns more persuasive and automated vulnerability scanning easier. The government's response, including the new cyberdefence law, signals a major shift in how national security is managed, placing increased pressure on agencies like the National Cybersecurity Office to rapidly modernize and enforce new controls.
What we don't know yet
- Will the new cyberdefence law lead to increased international collaboration on infrastructure behind the attacks?
- How quickly can companies patch vulnerabilities and replace outdated technology to meet the new mandates?
What would change this answer
— Other considerations
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Who else could feel it
Other possible ripples from the same event.
- cabinetLikelyThe cabinet may need to formulate a national policy response to widespread cyberattacks.
- Minister for Digital TransformationLikelyThe cyberattack wave forces the Minister for Digital Transformation to issue new guidelines and oversee national defense.
- house of representativesPossibleThe cyberattack crisis may prompt legislative review of Japan's security laws.
Reporting
- thestar.com.myYesterday
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