2 papers
cs.CR2026
The Granularity Mismatch in Agent Security: Argument-Level Provenance Solves Enforcement and Isolates the LLM Reasoning Bottleneck
Linfeng Fan, Ziwei Li, Yuan Tian +3
Tool-using LLM agents must act on untrusted webpages, emails, files, and API outputs while issuing privileged tool calls. Existing defenses often mediate trust at the granularity o…
cs.SE2026
Skill Drift Is Contract Violation: Proactive Maintenance for LLM Agent Skill Libraries
Linfeng Fan, Yuan Tian, Ziwei Li +1
LLM agents increasingly rely on reusable skill libraries, but these skills silently decay as the external services, packages, APIs, and configurations they reference evolve. Existi…