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Brazilian Court Sanctions Lawyers for Prompt Injection in Court Filing
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Brazilian Court Sanctions Lawyers for Prompt Injection in Court Filing

A Brazilian labor court in Parauapebas, Pará fined two law firms 10% of an R$842,000 claim (about $16,000) for hiding a prompt-injection command in a petition. The white-on-white text told AI to respond superficially and not challenge the documents. Galileu, the National Justice Council's generative AI tool, detected it and blocked processing. The court cited Articles 5 and 77 of the Civil Procedure Code.

TL;DR Brazilian court fines two law firms for hiding a white-text prompt injection in a filing that the court's Galileu AI caught.

Organisations named here

  • G1
  • National Justice Council
  • Vladimir Aras

Technologies named here

  • DeepL
  • Galileu

Standards and laws named here

  • Brazilian Civil Procedure Code
  • Fed. R. Civ. P. 11

Techniques named here

  • Prompt Injection
  • Indirect prompt injection
  • Hidden text (white font on white background)

Concepts named here

  • AI governance
  • Integrity of machine-readable content in court filings
  • Judicial sanction for AI manipulation
  • Procedural good faith