Prompt Injection in Court Filing Triggers Brazil Lawyer Sanctions
A Brazilian labor court issued the likely world-first judicial sanctions for intentional prompt injection, fining two law firms after they embedded a hidden white-on-white instruction in a court filing designed to manipulate the court's Galileu AI review system. The concealed command directed any AI reading the document to respond superficially and avoid scrutinizing evidence, directly targeting judicial AI infrastructure. The case establishes a legal precedent that the machine-readable integrity of court documents falls within existing procedural good-faith obligations.