Dimon called the risks around Mythos a “real issue” at a Senate summit as Washington tightened and then eased access restrictions after Anthropic added safeguards.
JPMorgan Chase CEO Jamie Dimon said Anthropic's Mythos AI model poses serious cybersecurity and national security risks, describing the issue as a “real issue” and warning that broad access to advanced AI capabilities must be controlled. Speaking at Senator Dave McCormick's Pennsylvania Defense and Innovation Summit on July 15, Dimon said “you're giving ballistic missiles to individuals with Mythos,” underscoring concerns about powerful systems that can identify software vulnerabilities at scale. Anthropic released Mythos in April to a select group that included JPMorgan, and banks have been interested in the model because it is seen as one of the most advanced tools for finding cybersecurity weaknesses and helping firms address them more quickly. In June, the U.S. government ordered Anthropic to restrict access to its top AI models, Fable 5 and Mythos 5, for foreign nationals over national security concerns, prompting the company to cut off worldwide access before later restoring availability after implementing new safeguards. The episode reflects broader efforts by Washington and the tech industry to manage the risks of advanced AI systems that could be misused, including by military intelligence services in China, Russia or other countries of concern.