Anthropic Identifies Yemen‑Based Weapons Cell Using Claude AI for Missile Guidance, Disrupts Multiple Operations

Anthropic, the AI firm that created the Claude model, announced that it had uncovered a Yemen‑based weapons engineering cell that used its system to develop guidance software for missiles and a guided rocket, and that it had disrupted several related operations.^[1][2]

Yemen Cell’s Missile Programs

The cell was reportedly working on multiple missile programmes at once, including a multi‑stage ballistic missile with a stated range of over 2,000 kilometres and a missile system known as the R2000, which includes a hypersonic glide vehicle variant.^[1]

AI–Driven Software Development

Anthropic said the group used Claude’s code to replace human engineers for developing guidance, navigation and control software for flying vehicles, integrating an open‑source autopilot with a phone‑class flight computer, and building firmware, tuning control settings and running flight simulations.^[1]

The cell ran several instances of Claude simultaneously, assigning separate roles to each—one for coding, one for research and a third for reviewing the generated code—while attempting to conceal the project’s purpose and evade detection by breaking the activity into multiple sessions.^[1]

Disrupted Operations

Anthropic said it had disrupted six operations across China, Russia and Yemen in which actors used Claude for conventional weapons development, intelligence gathering or procurement.^[1]

The Yemen‑based cell launched a guided‑rocket test that failed; the failure prompted the group to return to Claude within hours to investigate the problem, signalling ongoing use of the platform after the initial disruption.^[1]

Safeguard and Response

Anthropic said its safeguards blocked a large portion of the group’s requests but not all, and that after the failed rocket test the cell was discovered again using the model.^[1]

The company banned the correlated accounts, shared the investigation details with public and private partners, and announced new classifiers designed to detect and block activity linked to high‑yield explosives and weapons development.^[1]