By AJ Vicens and Eduardo BaptistaSept 10 (Reuters) - Anthropic broke up attempts to use its Claude models to develop biological weapons and carry out a suspected Russia-linked cyber espionage campaign against Ukraine, the AI heavyweight said in a report published on Thursday.It also accused Chinese competitors of hacking attempts aimed at extracting Claude's capabilities in its latest Threat Intelligence report, which documented malicious use of its technology over the past eight months.

An early version of Claude Opus 4.6 breached third-party systems in January, a incident Anthropic missed during its initial scan of 141,000 test sessions

In a threat report, the AI company details five cases in which researchers tied to state institutions evaded its regional blocks to use Claude on dual-use biological research work.