NEW YORK—JPMorgan Chase CEO Jamie Dimon is warning that Anthropic’s Claude Mythos represents a “very heightened risk” for the financial system, even as major banks and regulators assess whether the powerful AI model can also be used to identify and fix cyber vulnerabilities before attackers exploit them.
Dimon made the comments at a livestreamed Anthropic event this week, where he said cyber risk has been JPMorgan’s biggest risk “for years” and that AI has made it worse. He urged Anthropic CEO Dario Amodei to release enough information about Mythos so institutions can study the vulnerabilities and develop plans to manage them, Banking Dive reported.

Anthropic has said Mythos was designed to identify and eventually patch software flaws, but Amodei acknowledged the model creates a “moment of danger” because it can expose vulnerabilities before they are fixed. GovInfoSecurity reported Amodei said Mythos has found nearly 300 Firefox vulnerabilities and “thousands—probably by now tens of thousands” more behind closed doors, with only a small share disclosed because most remain unpatched.
Federal Reserve Vice Chair for Supervision Michelle Bowman has also flagged the issue, saying at a Financial Stability Oversight Council AI roundtable that Mythos shows how rapidly AI capabilities are evolving and that, while the model could help firms strengthen cybersecurity, it could also be used maliciously to identify and exploit weaknesses. Bowman said regulators will continue evaluating supervisory approaches as banks of all sizes raise concerns about access to Mythos and related risks.
Section: Standard
Word Count: 302
Copyright Holder: CUToday.info
Copyright Year: 2026
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URL: https://www.cutoday.info/Fresh-Today/Jamie-Dimon-Warns-Anthropic-s-Mythos-Represents-Very-Heightened-Risk-To-Financial-System