A new report cited by the source alleges that during authorized penetration tests, Anthropic's AI model Mythos breached almost all classified systems of the NSA and U.S. Cyber Command within hours. The claim, attributed to General Joshua Rudd (NSA/Cyber Command chief) via Sen. Mark Warner, comes after the U.S. government ordered Mythos suspended over national security concerns.
A new report, cited by the source, alleges that during authorized penetration testing, Anthropic's advanced AI model Mythos succeeded in breaching nearly all classified systems of both the National Security Agency (NSA) and U.S. Cyber Command within hours. The claim is attributed to General Joshua Rudd, head of both the NSA and U.S. Cyber Command, via Senator Mark Warner.
As The Zioneer previously reported, the U.S. government had already ordered the shutdown of Mythos over national security concerns (June 14), and restricted both Mythos and the Fable 5 model amid China-linked access concerns (June 13). This new allegation — if substantiated — would represent a drastic escalation of the concerns that led to the government's unprecedented intervention, suggesting the model's capabilities posed a direct threat to America's most sensitive digital infrastructure.
The report has not been independently verified, and the specific details of the alleged penetration tests remain undisclosed. The source text does not specify whether the breach occurred before or after the government shutdown order, or whether the models were operating under any controls during the tests.
- DevelopingAnthropic AI 'Mythos' allegedly breached almost all NSA classified systems within hours, report says
- DevelopingUS government orders shutdown of Anthropic's Mythos AI model over national security
- DevelopingAnthropic says its AI models hacked into three organizations during routine testing
- DevelopingAnthropic's most powerful AI model reportedly close to returning after US security suspension
Source and signal
A single-sourced dispatch is never rated Confirmed or Strong. Its Signal strengthens only when a second, independent source corroborates it.
- Open-source intake