Japan's finance minister to meet with banks this week over Anthropic's Mythos AI model security concerns

Satsuki Katayama, Japan's finance minister, is scheduling meetings with officials from Japan's largest banks as early as this week to discuss Anthropic's new AI model called Mythos and its potential risks to the financial sector.

Mythos is Anthropic's latest large language model (an AI system trained to understand and generate text). The finance ministry's focus on this model suggests concerns about how advanced AI systems could be misused in banking—whether through fraud, data theft, or other financial crimes that banks need to prepare for.

For bank employees and customers, this means Japan's financial institutions may soon face new security requirements or policies around which AI tools they can use. Banks may restrict staff from uploading sensitive customer data into public AI systems, or require approval before adopting new AI products—similar to how they manage cybersecurity risks today.