Pará Bar Suspends Lawyers Over Hidden AI Command in Court Filing

Overview

• The Pará bar, which issued a 30-day suspension Friday, also sent the case to its ethics tribunal for review.
• The labor judge in Parauapebas fined the two attorneys 10% of the claim value (R$84,250.08) for hiding white-on-white text that told an AI to produce a superficial response and ignore documents.
• The court’s AI assistant, Galileu, detected the invisible text, flagged it to the judge, and blocked processing, and the sanction followed a human review.
• The lawyers deny any bid to sway magistrates, say the line was meant to “protect the client” from AI tools, and plan to appeal, leaving disciplinary and appellate tracks open.
• Galileu was built by TRT-4 and adopted nationally in 2025 with layered security, and officials say this is the first confirmed prompt-injection case, which could spur stricter PDF checks and data governance across Brazil’s e-courts.