CPD applies CUSUM change-point detection to standardized next-token entropy streams to identify and localize optimization-based adversarial suffixes, achieving higher F1 and better localization than windowed-perplexity baselines across six open-weight chat models.
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Detecting Fluent Optimization-Based Adversarial Prompts via Sequential Entropy Changes
CPD applies CUSUM change-point detection to standardized next-token entropy streams to identify and localize optimization-based adversarial suffixes, achieving higher F1 and better localization than windowed-perplexity baselines across six open-weight chat models.