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over-defense

topic1 events
papersTODAY 04:00 UTC

PIDS-Bench benchmarks prompt-injection detectors under distribution shift

A new arXiv paper introduces PIDS-Bench, a benchmark that evaluates prompt-injection detectors beyond aggregate F1 scores on in-distribution test data. It examines detector behavior under distribution shift, obfuscation and over-defense, with particular attention to false positives on benign inputs near the decision boundary. The authors argue that standard evaluation practices give limited visibility into how these systems behave in realistic conditions.

safety/benchmark/prompt-injection/evaluation