Amazon CEO Andy Jassy may have triggered a security controversy that led Anthropic to block global access to two of its AI models last Friday. According to *The Wall Street Journal*, Jassy informed Treasury Secretary Scott Bessent and other government officials that Amazon researchers had used Anthropic’s Claude Fable 5 to gather information potentially useful in cyberattacks. This disclosure prompted the government to impose an export control ban on both the Fable 5 and Mythos 5 models. An Amazon spokesperson told the *WSJ* that while it’s “not uncommon for governments to seek our counsel on potential security risks,” the company does not disclose “the details of those discussions.”

*The Information* and *Reuters* also reported that Amazon, a major investor in Anthropic, had raised concerns about the security of the company’s models. David Sacks, who served as Trump’s former AI czar and now co-chairs the President’s Council of Advisors on Science and Technology, offered his own account of the discussions. He claimed that “a highly credible trusted partner of both Anthropic and the USG […] came forward with [information about] a jailbreak.”

Sacks added, “The Admin asked [Anthropic CEO Dario Amodei] to fix the jailbreak or de-deploy the model. Dario refused.”