ResearchResearch paperSafety & Alignment1 source · Oct 14, 2026

DANGERLENS: Probing Dangerous Representations Hidden by Safety Alignment

We introduce DANGERLENS, a probe that maps hidden states into vocabulary space and uses blinded semantic judgments to distinguish harmful goals and operational means from hazard recognition and safety control.

Key points

  • Safety alignment teaches language models to refuse harmful requests, yet the internal accessibility of hazardous concepts can retain traces of earlier training.
  • Can checkpoints with equally safe behavior differ in what remains accessible behind their refusals?
  • In this work, we investigate this question through paired training histories and a direct audit of intermediate representations.
  • Experiments on three Qwen1.5 scales show that checkpoints with prior harmful exposure generally retain greater hazardous concept accessibility after the same safety alignment, with the strongest separation in intermediate and later layers.

Sources (1)

  • [1]DANGERLENS: Probing Dangerous Representations Hidden by Safety Alignment
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 14, 01:10 AM
    We introduce DANGERLENS, a probe that maps hidden states into vocabulary space and uses blinded semantic judgments to distinguish harmful goals and operational means from hazard recognition and safety control.
    Safety alignment teaches language models to refuse harmful requests, yet the internal accessibility of hazardous concepts can retain traces of earlier training.

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