Author

Bo-Han Lu

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Preprint Aug 2026

The Model's Tell: Measuring Context-Leakage Attack Signals with Behavior Gauges

This paper proposes LeakGauge, which probes this response by appending a suffix that gauges leakage behavior and mapping its prefill token probabilities to an attack-risk score, and shows that the risk score is sensitive to an internal leakage-related direction.

Maosen Zhang, Jianshuo Dong, Bo-Han Lu et al. · 1 citation