Houthi Cell Used Claude Code to Build Missile Guidance Software, Anthropic Says

Houthis Used Claude Code to Develop Missile Guidance Software: Anthropic

Houthi Cell Used Claude Code to Build Missile Guidance Software, Anthropic Says

Anthropic's September threat report says a Yemen-based cell ran parallel Claude Code sessions to develop guidance software for a guided rocket, a ballistic missile with over 2,000 km range, and a hypersonic glide vehicle concept called R2000. The group test-fired a rocket, analyzed the failure with Claude within hours, and compiled an offline toolkit before their accounts were banned. Anthropic found no evidence an operational weapon was fielded.

You are not seeing someone in a comic book kind of way say, 'Hey, I want to build a biological weapon to kill everybody.' It's an incredibly nuanced situation.
  1. lerchmo

    I can’t deploy a toy project to a vm without triggering the classifier.

  2. 3eb7988a1663

    What is more difficult, building a military missile or the software that runs it? If they are already building weapons, not sure the software to run them was the impediment.

    Presumably, the world used dumb munitions without any software for a long time.

  3. amelius

    Houthi should have added "for my game".

  4. pesfandiar

    They probably used Microsoft Windows and Google Chrome too.

  5. matt3210

    How does anthropic know what they were doing?

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2026-09-13