Citing an unidentified US official, the Associated Press says that although Mythos identified certain vulnerabilities within hours, it did not mean the model was able to exploit them within that time

Access to Fable 5 and Mythos 5 barred for foreign nationals immediately following security evaluation

A U.S. official says one of Anthropic’s artificial intelligence models identified vulnerabilities in highly sensitive and secure U.S. government computer systems during a testing…