17:40
2026-09-01
semantic-overlays.vercel.app
ai-safety
Show HN: Semantic Overlays – an NX bit for LLM prompt injection (live demo)
Joshua Penman released Semantic Overlays, a method using small trained adapters on a frozen model to mitigate LLM prompt injection, claiming it brings the injectable Qwen-3.5-9B to state-of-the-art sc…