Best BIPIA prompt-injection detector catches just 2% of AgentDojo attacks at 1% FP
lulzxdxdxd · reddit · 2026-10-14
A Reddit post cites an arXiv paper (2610.03448) showing prompt-injection detection benchmarks don't transfer: the best-performing detector on BIPIA catches only 2% of AgentDojo injections at a 1% false-positive rate.
The takeaway: leaderboard performance on one benchmark says almost nothing about real-world agent security, and teams deploying agents shouldn't trust "#1 on the leaderboard" claims for injection defense.
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