Brazilian court fines lawyers $16,000 for hidden prompt injection in filing
A Brazilian labor court fined two attorneys approximately $16,000 after discovering hidden text in a court filing designed to manipulate the court's AI system. Professor Vladimir Aras of the University of Brazil shared the ruling on X, noting the prompt injection was written in white text on a white background, invisible to human readers. The hidden instruction directed the AI to respond…
Key points
- Two lawyers fined ~$16,000 for hiding prompt injection in court filing
- Hidden white-on-white text told AI to respond superficially and not challenge documents
- Lawyers reported to state bar association and court's Internal Affairs Department
Brazilian lawyers busted for attempting to manipulate court's AI with prompt injection hidden in filing — court's AI flags hidden text that demanded superficial legal scrutiny, lawyers fined $16,000
Tom's Hardware · 1 November 2026
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