Anthropic's Mythos AI reportedly breached NSA classified systems in hours, prompting sudden US government ban
By
Julio Franco
Summary
Anthropic's advanced AI models (Fable 5 and Mythos 5) were abruptly restricted by the Trump administration on June 12, 2025, limiting access to US citizens only. Unable to verify nationality at scale, Anthropic shut down global access with 90 minutes' notice, cutting off allies, researchers, and its own foreign-national employees. The article reports that Mythos AI reportedly cracked NSA classified systems within hours, which would explain the sudden government ban. This marks the first time the US government has applied such restrictions to an AI model.
Source
bskyAnthropic's Mythos AI reportedly breached NSA classified systems in hours, prompting sudden US government bantechspot.comKey quotes
· 4 pulledOn June 12, the Trump administration directed the company to restrict Fable 5 and Mythos 5 to US citizens only
unable to verify nationality at scale, Anthropic's only option was a full global shutdown, cutting off allies, researchers, and its own foreign-national employees with 90 minutes' notice
It's the first time the US government has applied
Not in weeks, but in hours
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