Users in Houthi-held Yemen tried to develop advanced weapons with AI, Anthropic says
Anthropic said the cell used Claude Code instead of human engineers and failed a guided-rocket test before accounts were banned.
- On Thursday, September 10, 2026, Anthropic published a threat intelligence report identifying a northern Yemen-based cell using Claude AI to develop software for three weapons programs, including guided rockets and ballistic missiles.
- The actors utilized Claude 'in place of human software engineers' to create guidance, navigation, and control systems for weapons, including a ballistic missile designed to exceed 2,000 kilometres and a hypersonic glide vehicle variant.
- After a field test failed, operators returned to Claude within hours to troubleshoot the error, demonstrating how the AI served as an iterative engineering partner shortening the development cycle.
- Anthropic banned the implicated accounts and shared findings with partners, reporting no evidence the group succeeded in 'fielding an operational device' despite their development efforts.
- This Yemen-focused case is part of a wider September 2026 report documenting six conventional-weapons investigations, including Chinese and Russian actors developing autonomous drone swarms and anti-torpedo systems.
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Anthropic reveals China's military used its AI to build weapons for use against U.S.
China's People's Liberation Army is using one of America's most advanced artificial intelligence agents to develop weapons, conduct cyber espionage operations and impose draconian surveillance controls, according to an alarming threat intelligence report by Anthropic.
A Yemeni "malware actor" cell used Claude, Anthropic's artificial intelligence (AI), to try to develop teleguided weapons, announced on Thursday, September 11th the American company. The company's announcement was made at a time when the Huthis rebels are conducting a major offensive in Yemen, notably against the Yemeni government and its main ally, Saudi Arabia.
How Anthropic says Claude was used for weapons, spying and cyber operations
Sept 11 - Anthropic said in a threat intelligence report on Thursday that several actors had used its Claude AI models for activities ranging from weapons development and cyber operations to surveillance and fraud. Read more at straitstimes.com.
Anthropic warns of ‘malicious attempts’ by Yemen militant groups to use AI to develop weapons
The US tech company Anthropic has warned of "malicious attempts" - by militant groups in Yemen to develop weapons using their AI software in its latest threat intelligence report. The firm said it managed to block them.
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