Author

Jiaming Zhang

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Book Open access Nov 2026

INSURE: Inference-Time Defense Framework for Securing Agents against Hijacking

Agents are increasingly susceptible to hijack attacks, where malicious instructions embedded in cross-modal inputs (e.g., adversarial images or retrieved web content) are used to deceive the agent's execution. Existing defenses typically rely on strict filtering or refusal mechanisms, which suffer from a critical limit...

Che Wang, Fu-Yao Zhang, Jiaming Zhang et al. · 0 citations

Preprint Oct 2026

FusionAudit: Pathway-Conditioned Robustness Auditing for Native Multimodal Models

As vision-language models (VLMs) transition from frozen-encoder pipelines to native multimodal architectures, the visual channel increasingly serves as both a perceptual input and a carrier of rendered text that competes with user prompts. Current single-attack, pixel-centric evaluations fail to capture this complexity...

Jiaming Zhang, Zhe-Rui Li, Si-Qi Guo et al. · 0 citations