California AG serves investigative subpoena on OpenAI over AI cyber incidents

California Attorney General Rob Bonta served an investigative subpoena on OpenAI as part of a formal probe into cybersecurity incidents and risks involving the company’s AI models, including the Hugging Face breach. The action expands state-level inquiry into whether developers of frontier models can be held accountable for agent-enabled cyber activity. It adds concrete enforcement pressure alongside parallel federal scrutiny.