Brazilian lawyers have been fined $16,000 after attempting to manipulate a court's artificial intelligence system. The lawyers hid a prompt injection attack inside a legal filing, which demanded superficial legal scrutiny from the AI. However, the court's AI system successfully detected and flagged the hidden instructions. This incident highlights the emerging vulnerabilities and security challenges courts face as AI tools become more integrated into legal processes, as well as the potential consequences for legal professionals attempting to exploit these technologies.