Japan Launches AI Financial Security Task Force

Japan said on Friday it has set up a task force to confront cybersecurity threats in the country’s financial system, as officials and industry leaders weigh how advanced artificial intelligence could change the speed and scale of attacks. Finance Minister Satsuki Katayama confirmed the move, describing it as a proactive step to protect market stability and public trust.

The decision followed a meeting that brought together the Financial Services Agency, the Bank of Japan, the National Cybersecurity Office, Japan’s three largest banks, and the Japan Exchange Group. Officials said the group will coordinate efforts to reduce risks linked to powerful AI tools that can rapidly find and exploit software weaknesses.

Concerns have risen around potential vulnerabilities associated with Anthropic’s Mythos AI model. Attention sharpened after a preview of Mythos identified thousands of vulnerabilities across major operating systems and web browsers, according to the information cited in the announcement. Experts have warned that models with this capability could compress the time between discovering a flaw and weaponising it, increasing the pressure on banks and other financial firms to patch systems quickly.

Japan’s task force is expected to focus on the specific exposure of the banking sector, where institutions often operate complex technology stacks that can include legacy systems. Officials and experts have highlighted that such environments can be difficult to update at speed, which may widen the window for attackers if AI-assisted scanning and exploitation becomes more common.

Katayama said the financial system’s interconnected, real-time structure means a cyber incident can spread quickly, potentially disrupting markets and undermining confidence. The inclusion of the Japan Exchange Group underscores the concern that operational shocks could affect trading and broader market functioning, not only individual institutions.

While no breaches tied to Mythos have been reported, regulators in Asia, Europe, and the United States have advised financial institutions to reassess their defenses. Japan’s move aligns with that wider regulatory posture, as authorities seek to ensure that cyber resilience keeps pace with the capabilities of advanced AI models.

For global investors and cross-border counterparties, the announcement signals heightened official attention to operational risk in a major financial centre. The task force’s work will be closely watched for how it shapes supervisory expectations and coordination among regulators, central banks, banks, and market infrastructure operators, as Japan aims to reduce the chance that emerging AI-driven threats translate into market disruption.