NeurIPS paper: [MASK] tokens betray jailbreaks in masked diffusion language models

kastnerkyle · x · 2026-11-11

A NeurIPS paper shows that the [MASK] placeholders in a masked diffusion LLM's response are themselves a jailbreak signal: by modeling the probability distributions at masked positions for normal vs. jailbreak requests and thresholding a score s(x), some jailbreaks are easier to detect from the masks than from the prompt itself.

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