Author

Yuwen Zhai

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Preprint Oct 2026

MMA-SafetyBench: A Benchmark for Multimodal Agent Safety Evaluation

Multimodal agents increasingly rely on visual interfaces to perceive state and select actions, creating an attack surface not captured by text-only safety evaluations. We study Visual Semantic Hijacking, in which deceptive but semantically meaningful interface elements, such as forged system alerts, cause an agent to d...

Yu-Ke Wang, Ben-Lei Cui, Sheng-Yuan Pang et al. · 0 citations

Review Aug 2026

Fully Unleashing the Multimodal Attacker: Meta-Adaptive Jailbreaking of Vision-Language Models

Results reveal a systemic vulnerability of frontier VLMs to meta-adaptive jailbreaks to meta-adaptive jailbreaks and motivate defenses against meta-level adversaries.

Ben-Lei Cui, Sheng-Yuan Pang, Yu-Ke Wang et al. · 1 citation

Preprint Aug 2026

MetaVideoAgent: Automated Video-Agent Evolution for Long-Form Video Understanding

Long-form video understanding requires locating sparse, question-relevant evidence in long, multimodal videos. Real-world video distributions differ in modality-specific information density, content structure, and evidence patterns, causing fixed video-agent designs to incur redundant processing or fail when mismatched...

Ben-Lei Cui, Ruize Wang, Junjie Li et al. · 1 citation