Author

D. Song

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Jul 2026

Agent Security Needs Redefinition through a Holistic Framework

This work operationalizes contextual security through four properties that must hold jointly and be evaluated continuously across the agent's trajectory, which changes which defenses are coherent, which evaluations measure something useful, and which attack patterns evaluation can see at all.

Vincent Siu, Jingxuan He, Kyle Montgomery et al. · arXiv.org · 1 citation

Preprint Aug 2026

Tunable Tool-Call Rates in LLM Agents via Representation Steering

Whether an instruction-tuned model calls a tool can be controlled by a single linear direction in its residual stream, extracted without any training from the model's own tool-use preference signal and turned into an inference-time intervention with no prompt change.

Yu-Qiang Chen, Vincent Siu, Yang Liu et al. · 0 citations