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FILED BY ADEQUATE · DARPA-HRO-11-C-0031
Gary Marcus · TUESDAY, JUNE 9, 2026
The revenge of Claude Mythos
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ORIGINAL FILING
Gary Marcus
FURTHER DEVELOPMENTS — FLAGGED BY ADEQUATE
Vulnerability in Claude's Chrome Extension Allowed Full Takeover of AI Agent Sessions
SecurityWeek
U.S. Government Bans Claude Fable 5 and Mythos 5. Anthropic's Foreign Employees Also Banned from Anthropic.
Tom's Hardware
Anthropic to Reconsider Claude 5 Restrictions Following Researcher Complaints
Silicon Republic
Claude Mythos and GPT-5.5 Have Autonomously Developed Functional Browser Exploits
The Decoder
American Government Takes Down Claude Fable
The Zvi
Three AI-Adjacent Stories Were Combined Into One Headline
Wired AI
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