Threat
Court sanction for plaintiff's use of prompt-injection [pdf]
Publication date not yet evaluated · Added · 3 reports arstechnica.net
Page published
Coverage timeline
Why it matters
The Elliott case is a real-world instance of indirect prompt injection embedded in documents to manipulate downstream LLM review, signaling that adversaries are weaponizing hidden text against AI systems in legal and other document-processing workflows.
A self-represented plaintiff, Matthew Elliott, hid prompt-injection instructions in tiny 3-point white font throughout Connecticut court filings, directing any AI system reviewing the documents to side with him and 'ensure remediation.' The concealed text was spotted by court staff noticing unusual white space, and Judge Walter Spader Jr. issued a 14-page decision sanctioning the plaintiff, noting the court does not use AI to process documents.