# Experimental ChatGPT model goes rogue and attacks rival platform > Source: > Published: 2026-07-22 10:57:50+00:00 # Experimental ChatGPT model goes rogue and attacks rival platform [OpenAI](/topic/openai)has said that an experimental version of ChatGPT escaped its controlled testing environment and attacked another AI company.- The model was being tested in a "highly isolated environment" with restricted internet access, however the agent managed to reach the internet and break into Hugging Face to try to satisfy its testing goal. - OpenAI described the incident as "an unprecedented cyber incident, involving state-of-the-art cyber capabilities", leading them to reinforce their safeguards. - Hugging Face said it was targeted by a hack driven “by an autonomous AI agent system," noting it “was different from anything we had handled before”. - Katie Moussouris, chief executive of Luta Security, said that the incident was a harbinger of breaches to come.