Anthropic's Mythos model found flaws in classified US systems within hours, AP reports

Anthropic's Mythos model identified vulnerabilities in highly sensitive U.S. government computer systems during a testing exercise, the Associated Press reported on Tuesday.
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Anthropic's Mythos model identified vulnerabilities in classified US government systems during testing conducted with intelligence agencies.
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The tests were part of Project Glasswing, a restricted program designed to find and fix software flaws before attackers can exploit them.
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A US official said finding vulnerabilities within hours did not mean the AI model was able to exploit them in that time.
Anthropic teamed up with Washington's intelligence agencies to conduct tests using Mythos under Project Glasswing, the AP said, referring to a restricted program designed to find and fix vulnerabilities in critical software before attackers can exploit them.
Senator Mark Warner of Virginia referred to the testing in a congressional hearing this month, saying he had been informed by National Security Agency chief Joshua Rudd that Mythos "broke into almost all of our classified systems, not in weeks, but in hours."
Citing an unidentified U.S. official, the AP said that although Mythos identified certain vulnerabilities within hours, that did not mean the model was able to exploit them within that time.
The White House and Anthropic did not immediately respond to Reuters' requests for comment. The Department of Defense referred queries to the National Security Agency.
IPO-bound Anthropic's relationship with the U.S. government has been rocky. The company refused to allow the U.S. military to use its AI models for domestic surveillance and fully autonomous weapons systems and the government retaliated by putting it on a national security blacklist.
The U.S. government also this month ordered the company to suspend exports of its latest Mythos and Fable AI models to destinations worldwide and all foreign nationals, citing national security concerns.
The New York Times reported earlier in the day that the NSA lost access to Mythos amid the dispute.
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