// Hacker Noon · 14 May 2026

Mean Pooling Was Hiding Prompt Injections in Our RAG Pipeline

RAG detectors fail because mean pooling averages out malicious signals in long documents. While a short attack gets diluted, the encoder’s raw hidden states capture the threat. By switching to sliding a small window over states and taking the max score you preserve the signal without extra models. I...

Hacker Noon

@hacker-noon · Lokesh M

hackernoon.com

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