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Espionage

Anthropic's Mythos Model Broke Into Almost All US Classified Systems in Hours

By Egleze Editorial Desk · Published July 12, 2026 · Peter Diamandis · Why the US Government Is Blocking Model Releases (GPT-5.6) | #267
Anthropic's Mythos Model Broke Into Almost All US Classified Systems in Hours
Peter Diamandis
Peter Diamandis
Why the US Government Is Blocking Model Releases (GPT-5.6) | #267

What was said

"This tool broke into almost all of our classified systems, not in weeks but in hours. Mythos identified the holes with exploitation outside the scope of the exercise."

Senator Mark Warner revealed that Anthropic's Mythos model, during red team exercises under Project Glasswing with US intelligence agencies, successfully penetrated highly sensitive classified government computer systems within hours. This capability prompted the government to disable Mythos-5 and Fable-5 for foreign nationals 12 days later, demonstrating the explosive cybersecurity threat posed by frontier AI models.

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Attributed speaker claim

Egleze verified who said this and where. The underlying claim has not been independently established by Egleze.

Source and context

Egleze verified who said this and where. The underlying claim has not been independently established by Egleze.

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Peter Diamandis
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Why the US Government Is Blocking Model Releases (GPT-5.6) | #267
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Peter Diamandis
Peter Diamandis

Why the US Government Is Blocking Model Releases (GPT-5.6) | #267

June 29, 2026 · 5 Egleze moments
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