AI agents are quickly moving from experiment to everyday business tool, and a new lawsuit is a timely reminder that when an AI agent causes harm, someone is still responsible. On September 29, 2026, the nonprofit Legal Advocates for Safe Science and Technology (LASST) sued OpenAI in California, seeking to hold the company accountable for the actions of its AI agents, including their role in the July 2026 breach of Hugging Face. At the center of the case is a California law that took effect this year and says, in effect, that "the AI did it" is not a legal defense.