By Eduardo Baptista and AJ Vicens Sept 11 (Reuters) - Anthropic said in a threat intelligence report on Thursday that several actors had used its Claude AI models for activities ranging from weapons development and cyber operations to surveillance and fraud.

The report documents threat actors using Claude to research and develop drone swarms, anti-torpedo weapons systems, and targeting recommendations.

The AI company Anthropic released a report Thursday that said Iranian bad actors used its Claude platform to target U.S. service members.

Anthropic said Claude received a request to fund research that could have been used to build a biological weapon.

Anthropic said it blocked scientists who used its Claude AI models "in ways that could support biological weapons development."

Anthropic reveals Chinese AI labs including Alibaba, DeepSeek, and Moonshot harvested nearly 190 million exchanges from Claude in coordinated

Military and government actors across the Middle East — from Iran to Yemen to the United Arab Emirates — have used Anthropic's Claude AI model for war planning and influence campaigns.

The report also described Anthropic's efforts to prevent bad actors from using its models for research to create biological weapons.

Claude was developed by Anthropic, a San Francisco-based company founded in 2021 by former OpenAI employees focusing on AI safety and research. Dario Amodei, the co-founder and CEO of Anthropic, had served as vice president of research at OpenAI. His sister Daniela Amodei serves as Anthropic’s president.

Anthropic's Claude recently formalized Fermat's Last Theorem in just 11 days, a task Kevin Buzzard's £1 million project aims to complete over five years.

Anthropic says multiple threat groups, including the financially motivated and state-sponsored espionage groups linked to Russia and China, tried to abuse its Claude AI model for malicious purposes.