State-sponsored Chinese hackers are believed to be responsible for a widespread cyber espionage campaign that primarily relied on American artificial intelligence technology, according to a new report released by Anthropic on Thursday.

The 13-page report revealed the first documented case of a cyberattack that largely leveraged AI capabilities with limited human input to carry out cybercrimes. AI usage accounted for 80-90% of the tactical operations conducted, leaving human operators with 10-20% of the remaining work.