# Brazilian court fines lawyers over hidden instructions aimed at its AI

_Published Sunday, November 1, 2026 at 1:06 PM EST · AI, Policy · Latest · Tier 2 — Notable_

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A Brazilian labor court fined two lawyers 10% of their client's award, amounting to approximately $16,000, after finding hidden instructions aimed at manipulating its AI tool, Tom's Hardware reported. The filing used white text on a white background to tell the system to avoid challenging documents.

The court held the attorneys who signed the complaint responsible and referred them to the state bar association and the Regional Labor Court's Internal Affairs Department. The plaintiff won by default because the defendant did not respond, so the attempted manipulation was unnecessary to the outcome.

## Sources

- [Tom's Hardware](https://www.tomshardware.com/tech-industry/artificial-intelligence/brazilian-lawyers-busted-for-attempting-to-manipulate-courts-ai-with-prompt-injection-hidden-in-filing-courts-ai-flags-hidden-text-that-demanded-superficial-legal-scrutiny-lawyers-fined-usd16-000)

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Canonical: https://techandbusiness.org/newswire/qj40s5yOB6Su5Zp2Jm1Pad
Published: 2026-11-01T18:06:26.183Z
Story chronology: 2026-11-01T15:05:00.000Z
Retrieved: 2026-11-01T21:01:13.631Z
Publisher: Tech & Business (techandbusiness.org)