In April 2026, Japan’s Financial Services Agency (FSA), the National Police Agency (NPA), and other key financial bodies issued a critical joint warning regarding an "at-hand crisis" involving high-speed, AI-driven cyber threats. This urgent advisory was sparked by the emergence of , a new AI model from Anthropic that demonstrated the ability to discover thousands of vulnerabilities across major operating systems and web browsers faster than they could be patched. The Core Threat: Claude Mythos
: The group includes the Financial Services Agency (FSA) , the Bank of Japan, the National Cybersecurity Office, the Japan Exchange Group, and the country's three largest banks. Japan’s Police and FSA Publish a Joint Cyber Wa...
: Authorities warned that the AI can automatically generate programs to execute these attacks, allowing malicious actors to strike financial infrastructure with minimal manual effort. In April 2026, Japan’s Financial Services Agency (FSA),
: Finance Minister Satsuki Katayama emphasized that attacks on the financial sector could trigger a broader loss of public credibility and immediate market instability. Strategic Response and Task Force : Authorities warned that the AI can automatically
In response to this escalating risk, the Japanese government has established a specialized task force to fortify the nation's digital financial frontier.
