The legal team had been using ChatGPT for six months before the security team found out. They'd discovered it was dramatically faster for contract summarisation — what took a paralegal four hours took the AI four minutes. They'd been pasting contracts in: client names, deal terms, confidential provisions, everything. The personal free-tier accounts they were using had conversation history enabled, data had been submitted to OpenAI's servers, and they had no idea whether any of it had been used for…