Threat · curated 26 Aug 2026
Prompt Injection in Court: the Invisible White Text Meant to Sway the AI
First reported pasqualepillitteri.it
Coverage timeline
Single-source incident — first reported, latest, and curated coincide.
Why it matters
Indirect prompt injection through hidden white text in documents is now appearing in real-world legal filings, showing that any AI system ingesting third-party documents can be covertly steered by content invisible to human reviewers.
A plaintiff embedded invisible white-on-white text instructions in his court filings intending to make any AI reviewing the documents side with him, an example of indirect prompt injection via hidden document text. The judge detected the manipulation by printing the pages.