Judge Walter Spade of Connecticut, US, revealed that in a case, plaintiff Matthew Elliott embedded hidden textual instructions readable only by artificial intelligence systems in documents submitted to the court, attempting to influence the outcome of the case. These hidden instructions were formatted to be invisible to humans but fully visible to AI systems, requiring the AI systems to align with the plaintiff's arguments during review and ignore the court's previous dismissal decisions. Although the hidden text did not affect the case's ruling, the judge believed that this attempt set a dangerous precedent, and as AI tools become increasingly prevalent in the court system, such malicious tactics may resurface.