Filed under judiciary.

The Filing the AI Was Meant to Read

When a hidden prompt-injection instruction addressed to Brazil's court AI arrived in a 3rd Labor Court filing in May 2026, the model detected it before drafting began and alerted the judge. The fine that followed was the first sanction under CNJ Resolution 615/2025 to classify adversarial input as an attack on judicial impartiality. Three jurisdictions have now worked through that sequence; no other Latin American legal system has.