Prompt Injection Defense Weekly

Defense Tip #1: Spotlighting — The One System-Prompt Change That Cuts Indirect Injection Risk

Indirect prompt injection is already deployed at scale across 15,000+ live web pages. This week: Spotlighting — wrap untrusted content with randomized delimiters, add one instruction to your system prompt, immediately reduce your RAG pipeline injection surface. Includes 3 ready-to-copy system prompt templates and a defense comparison table.