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13-Word Reddit Comment Can Poison ChatGPT and Gemini AI Search Results

A newly published academic paper has revealed a critical vulnerability in AI-powered deep-research systems, including those underpinning commercial tools like OpenAI’s Deep Research and Google’s Gemini Deep Research, that allows a single short Reddit comment to manipulate the reports these agents generate for thousands of users. Researchers from Cornell Tech have introduced WARP (Web Agent Retrieval Poisoning), a novel attack technique that expl…
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Cyber Security News broke the news on Monday, June 22, 2026.
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