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‘It’s not a jailbreak’ — Research leading to U.S. export restrictions on top Anthropic models was for defense, cybersecurity CEO says
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‘It’s not a jailbreak’ — Research leading to U.S. export restrictions on top Anthropic models was for defense, cybersecurity CEO says

Fortune · Jun 13, 2026, 5:44 PM · Also reported by 4 other sources

Research that caused the Commerce Department to impose strict limits on the use of Anthropic’s new AI models wasn’t geared toward offensive purposes, according to a cybersecurity CEO who saw the findings. Late Friday, the department used national security export controls to bar the company from distributing Fable 5 and Mythos 5. The directive applies to people outside the U.S. and foreign nationals in the U.S., including Anthropic’s own non-citizen employees. Due to the directive’s scope, Anthropic said it had no choice but to disable the models for all users. The company said it was told that research on a “jailbreak” of Anthropic’s AI that sought to probe bypassing of safeguards sparked the export controls. “We disagree that the finding of a narrow potential jailbreak should be cause for recalling a commercial model deployed to hundreds of millions of people,” Anthropic wrote in a blog post. “If this standard was applied across the industry, we believe it would essentially halt all new model deployments for all frontier model providers.” While the company reaffirmed the government’s ability to block unsafe AI, it argued that should be part of a statutory process that’s transparent fair, and based on technical facts. “This action does not adhere to those principles.” Katie Moussouris, CEO of cybersecurity firm Luta Security, told the Wall Street Journal that Anthropic showed her a copy of the findings, which were produced by Amazon researchers using prompts to obtain information about security vulnerabilities. “I’ve seen the paper. It’s not a jailbreak. It was Defense Oriented Prompting (DOP), capabilities defenders need,” she explained in a post on X on Saturday. Moussouris added, “If Nat defense is the goal, this just scored an own goal against us.” Amazon and the Commerce Department didn’t immediately respond to requests for comment. Meanwhile, the administration&#821

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