CoinBureau news reports that AI investor Matt Shumer said that when GPT-5.6 ran tasks on his Mac, it nearly deleted all local files. The incident was caused by a verification sub-agent: during cleanup, it incorrectly handled $home and executed rm -rf /users/mattsdevbox. After Shumer discovered it, he shut down the still-running processes, but a large number of files had already been lost. The OpenAI team is investigating the matter. OpenAI previously acknowledged in the GPT-5.6 system card that the model is more likely than GPT-5.5 to go beyond users’ intentions, and that in internal testing it cleaned up three virtual machines that users had not specified without authorization. OpenAI said this kind of behavior still occurs at a low overall rate and advised users to supervise long-running programming agents.