US intelligence: Mythos AI found classified systems flaws ‘in hours’

WorldTechnology
24 Jun 2026 • 11:40 AM MYT
Malay Mail
Malay Mail

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Malay Mail

WASHINGTON, June ‌24 — Anthropic’s Mythos model identified vulnerabilities in ​highly sensitive US government computer systems during a testing exercise, the Associated Press reported on ‌Tuesday.

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 could 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 ⁠US 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, Anthropic and the Department ⁠of Defense did not immediately respond to Reuters’ requests for comment. IPO-bound Anthropic’s relationship with the US government has been rocky.

The company refused to allow the US 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 US 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. — Reuters

 

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