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Fenghua Weng

3 accepted papers

2025

Adversary-Aware DPO: Enhancing Safety Alignment in Vision Language Models via Adversarial Training

EMNLP 2025

Safety alignment is critical in pre-trained large language models (LLMs) to generate responses aligned with human values and refuse harmful queries. Unlike LLM, the current safety alignment of VLMs is often achieved with post-hoc safety fine-tuning. However, these methods are less effective to white

2025

DELMAN: Dynamic Defense Against Large Language Model Jailbreaking with Model Editing

ACL 2025finding

Large Language Models (LLMs) are widely applied in decision making, but their deployment is threatened by jailbreak attacks, where adversarial users manipulate model behavior to bypass safety measures. Existing defense mechanisms, such as safety fine-tuning and model editing, either require extensiv…

2025

MMJ-Bench: A Comprehensive Study on Jailbreak Attacks and Defenses for Vision Language Models

AAAI 2025technical

As deep learning advances, Large Language Models (LLMs) and their multimodal counterparts, Vision-Language Models (VLMs), have shown exceptional performance in many real-world tasks. However, VLMs face significant security challenges, such as jailbreak attacks, where attackers attempt to bypass the…