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Hefei Mei

3 accepted papers

2026

PA-Attack: Guiding Gray-Box Attacks on LVLM Vision Encoders with Prototypes and Attention

CVPR 2026

Large Vision-Language Models (LVLMs) are foundational to modern multimodal applications, yet their susceptibility to adversarial attacks remains a critical concern. Prior white-box attacks rarely generalize across tasks, and black-box methods depend on expensive transfer, which limits efficiency. Th

Cited by 0SourcecodeScholar
2026

VEAttack: Downstream-agnostic Vision Encoder Attack against Large Vision Language Models

ICLR 2026poster

Large Vision-Language Models (LVLMs) have demonstrated capabilities in multimodal understanding, yet their vulnerability to adversarial attacks raises significant concerns. To achieve practical attacking, this paper aims at efficient and transferable untargeted attacks under limited perturbation siz…

Cited by 0SourcecodeScholar
2025

Efficient Image-to-Image Diffusion Classifier for Adversarial Robustness

AAAI 2025technical

Diffusion models (DMs) have demonstrated great potential in the field of adversarial robustness, where DM-based defense methods can achieve superior defense capability without adversarial training. However, they all require huge computational costs due to the usage of large-scale pre-trained DMs, ma…