RouteGuard uses response-conditioned attention and hidden-state alignment to detect skill poisoning in LLM agents, achieving 0.8834 F1 on Skill-Inject benchmarks and recovering 90.51% of attacks missed by lexical screening.
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RouteGuard: Internal-Signal Detection of Skill Poisoning in LLM Agents
RouteGuard uses response-conditioned attention and hidden-state alignment to detect skill poisoning in LLM agents, achieving 0.8834 F1 on Skill-Inject benchmarks and recovering 90.51% of attacks missed by lexical screening.