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Amazon CEO Andy Jassy may have been the source of security concerns that led Anthropic to cut off worldwide access to two models<\/a> on Friday.<\/p>\n The Wall Street Journal reports that Jassy told Treasury Secretary Scott Bessent and other government officials<\/a> that Amazon researchers used Anthropic\u2019s Claude Fable 5 to obtain information that could be used in cyberattacks. The government subsequently imposed an export control ban on the Fable 5 and Mythos 5 models.<\/p>\n An Amazon spokesperson told the WSJ that while it\u2019s \u201cnot uncommon for governments to seek our counsel on potential security risks,\u201d the company does not disclose \u201cthe details of those discussions.\u201d<\/p>\n The Information<\/a> and Reuters<\/a> similarly reported that Amazon (a major Anthropic investor<\/a>) had shared concerns about the security of Anthropic\u2019s models.<\/p>\n David Sacks, who Trump\u2019s former AI czar who now co-chairs the President\u2019s Council of Advisors on Science and Technology, offered his own account of the discussions, claiming<\/a> that \u201ca highly credible trusted partner of both Anthropic and the USG [\u2026] came forward with [information about] a jailbreak.\u201d<\/p>\n Sacks added, \u201cThe Admin asked [Anthropic CEO Dario Amodei] to fix the jailbreak or de-deploy the model. Dario refused.\u201d<\/p>\n<\/div>\n