Japan's Financial Services Agency has ordered financial institutions to implement short-term safeguards against the new Claude Mytos AI model [1].

The move comes as regulators warn that the U.S.-developed AI possesses an advanced ability to exploit system vulnerabilities. If misused, the technology could trigger severe financial system risks, including large-scale remittance failures and security breaches [2].

Finance Minister Satsuki Katayama issued the request during an emergency public-private meeting held on June 24, 2024 [1, 3]. Katayama said that the agency is requesting financial institutions under its jurisdiction to engage in short-term responses based on the changing threats posed by frontier AI [4].

According to the minister, the new AI represents a significant potential threat to the financial system [5]. To combat these risks, Katayama said the government will establish a working group with the financial industry to specifically address the vulnerabilities associated with Mytos and similar AI models [6].

The urgency of the situation is highlighted by international cooperation. The U.S. Treasury Secretary has set a deadline of two weeks for the Japanese government and its financial institutions to be granted specific access rights [7]. This access is intended to help Japanese regulators better understand and mitigate the risks inherent in the model's architecture.

Regulators have designated the adaptation to these AI models as a critical management issue for bank executives [1]. This classification forces institutions to treat AI security not as a technical IT concern, but as a fundamental risk to the viability of their business operations.

The new AI represents a significant potential threat to the financial system.

The Japanese government's classification of AI risk as a 'management issue' signals a shift in regulatory oversight. By moving the responsibility from IT departments to executive leadership, the FSA is preparing for a landscape where AI can autonomously identify and exploit systemic financial weaknesses. The rapid timeline for US-Japan coordination suggests that Claude Mytos represents a generational leap in AI capabilities that necessitates immediate, rather than incremental, defensive updates to banking infrastructure.