# Brazilian lawyers fined $16,000 for hidden prompt injection aimed at court AI

> Original title: 巴西两名律师试图通过隐藏提示词操纵法院 AI，被罚 1.6 万美元

- Source: IThome · AI
- Published: 2026-11-02T07:57:16.000Z
- Bad Influence: https://badinfluence.news/items/pga332gny0syaondq08u3gzkw
- Original: https://www.ithome.com/1/021/079.htm

## Summary

A Brazilian labor court fined two lawyers 10% of the claim value, about $16,000, after a filing contained white-on-white text instructing the court's AI to process it superficially and ignore other instructions. The court said the hidden prompt injection, which only became visible when the text colour was changed, damaged judicial dignity even though the plaintiff won by default and the attempt did not affect the outcome. The lawyers were also reported to the state bar association and the regional labor court's internal oversight unit.