India, Sept. 11 -- Scientists working inside state-supported research programmes have used Anthropic's Claude models to help plan and write up experiments that could feed into biological weapons development, the company disclosed late on Thursday, in a threat-intelligence report that offers the first public account by an AI firm of how its own tools have been weaponised for attempts at pathogen engineering, state-run surveillance of dissidents, election interference across three continents and the development of guided missiles and autonomous drones.

The disclosures form the central section of a 154-page report covering activity Anthropic said it disrupted between December 2025 and August 2026 across cyber operations, influence operation...