Event Brief
Yemen cell used Claude to develop guided rockets
By The BriefBrief · Sources (6)
Filed: Sep 12, 2026 at 12:06 AM ET
Summary: Anthropic says it identified a cell of threat actors in northern Yemen using its Claude chatbot to develop guidance, navigation and control software for three weapons programmes. The programmes included a guided rocket, a multi-stage ballistic missile targeting over 2,000 km range, and a hypersonic-glide variant, and Anthropic claims it banned accounts once illegal activity was detected.
WHO: Anthropic
WHAT: Anthropic identified a Yemen-based cell using Claude to develop guidance software for guided rockets and missiles.
WHEN: Sep 10, 2026
WHERE: Yemen
WHY: Anthropic detected illegal activity involving weapons development using Claude and banned the accounts.
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