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Large vision-language models (LVLMs) have achieved impressive performance across a wide range of vision-language tasks, while they remain vulnerable to backdoor attacks. Existing backdoor attacks on LVLMs aim to force the victim model to…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Zhifang Zhang , Qiqi Tao , Jiaqi Lv , Na Zhao , Lei Feng , Joey Tianyi Zhou

Following the recent popularity of Large Language Models (LLMs), several attempts have been made to extend them to the visual domain. From having a visual assistant that could guide us through unfamiliar environments to generative models…

Multi-modal large language models (MLLMs) extend large language models (LLMs) to process multi-modal information, enabling them to generate responses to image-text inputs. MLLMs have been incorporated into diverse multi-modal applications,…

Cryptography and Security · Computer Science 2025-03-21 Zenghui Yuan , Jiawen Shi , Pan Zhou , Neil Zhenqiang Gong , Lichao Sun

Current image generation models can effortlessly produce high-quality, highly realistic images, but this also increases the risk of misuse. In various Text-to-Image or Image-to-Image tasks, attackers can generate a series of images…

Computer Vision and Pattern Recognition · Computer Science 2025-05-01 Hao Cheng , Erjia Xiao , Jiayan Yang , Jiahang Cao , Qiang Zhang , Jize Zhang , Kaidi Xu , Jindong Gu , Renjing Xu

Visual language model (VLM) is rapidly being integrated into safety-critical systems such as autonomous driving, making it an important attack surface for potential backdoor attacks. Existing backdoor attacks mainly rely on unimodal,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Jiancheng Wang , Lidan Liang , Yong Wang , Zengzhen Su , Haifeng Xia , Yuanting Yan , Wei Wang

Pre-trained vision models (PVMs) have become a dominant component due to their exceptional performance when fine-tuned for downstream tasks. However, the presence of backdoors within PVMs poses significant threats. Unfortunately, existing…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Aishan Liu , Xinwei Zhang , Yisong Xiao , Yuguang Zhou , Siyuan Liang , Jiakai Wang , Xianglong Liu , Xiaochun Cao , Dacheng Tao

Large Language Models (LLMs) have achieved significantly advanced capabilities in understanding and generating human language text, which have gained increasing popularity over recent years. Apart from their state-of-the-art natural…

Cryptography and Security · Computer Science 2025-02-11 Yihe Zhou , Tao Ni , Wei-Bin Lee , Qingchuan Zhao

3D Vision-Language Models (VLMs), such as PointLLM and GPT4Point, have shown strong reasoning and generalization abilities in 3D understanding tasks. However, their adversarial robustness remains largely unexplored. Prior work in 2D VLMs…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Chao Liu , Ngai-Man Cheung

Recently, there has been a surge of interest in integrating vision into Large Language Models (LLMs), exemplified by Visual Language Models (VLMs) such as Flamingo and GPT-4. This paper sheds light on the security and safety implications of…

Cryptography and Security · Computer Science 2023-08-21 Xiangyu Qi , Kaixuan Huang , Ashwinee Panda , Peter Henderson , Mengdi Wang , Prateek Mittal

Large language models (LLMs) have raised concerns about potential security threats despite performing significantly in Natural Language Processing (NLP). Backdoor attacks initially verified that LLM is doing substantial harm at all stages,…

Cryptography and Security · Computer Science 2024-07-09 Pengzhou Cheng , Yidong Ding , Tianjie Ju , Zongru Wu , Wei Du , Ping Yi , Zhuosheng Zhang , Gongshen Liu

Large visual-language models (LVLMs) integrate aligned large language models (LLMs) with visual modules to process multimodal inputs. However, the safety mechanisms developed for text-based LLMs do not naturally extend to visual modalities,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Shen Li , Liuyi Yao , Wujia Niu , Lan Zhang , Yaliang Li

Vision-language models (VLMs) (e.g. CLIP, LLaVA) are trained on large-scale, lightly curated web datasets, leading them to learn unintended correlations between semantic concepts and unrelated visual signals. These associations degrade…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Maan Qraitem , Piotr Teterwak , Kate Saenko , Bryan A. Plummer

Benefiting from the powerful capabilities of Large Language Models (LLMs), pre-trained visual encoder models connected to an LLMs can realize Vision Language Models (VLMs). However, existing research shows that the visual modality of VLMs…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Zhendong Liu , Yuanbi Nie , Yingshui Tan , Xiangyu Yue , Qiushi Cui , Chongjun Wang , Xiaoyong Zhu , Bo Zheng

Deploying large vision-language models (LVLMs) introduces a unique vulnerability: susceptibility to malicious attacks via visual inputs. However, existing defense methods suffer from two key limitations: (1) They solely focus on textual…

Cryptography and Security · Computer Science 2025-03-17 Shuyang Hao , Yiwei Wang , Bryan Hooi , Ming-Hsuan Yang , Jun Liu , Chengcheng Tang , Zi Huang , Yujun Cai

With the advent of Large Language Models (LLMs) possessing increasingly impressive capabilities, a number of Large Vision-Language Models (LVLMs) have been proposed to augment LLMs with visual inputs. Such models condition generated text on…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Phillip Howard , Anahita Bhiwandiwalla , Kathleen C. Fraser , Svetlana Kiritchenko

Recent advances in vision-language models (VLMs) have significantly enhanced the visual grounding task, which involves locating objects in an image based on natural language queries. Despite these advancements, the security of VLM-based…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Junxian Li , Beining Xu , Simin Chen , Jiatong Li , Jingdi Lei , Haodong Zhao , Di Zhang

Vision-Language Models (VLMs) have garnered significant attention for their remarkable ability to interpret and generate multimodal content. However, securing these models against jailbreak attacks continues to be a substantial challenge.…

Cryptography and Security · Computer Science 2025-10-14 Aofan Liu , Lulu Tang

Artificial Intelligence have profoundly transformed the technological landscape in recent years. Large Language Models (LLMs) have demonstrated impressive abilities in reasoning, text comprehension, contextual pattern recognition, and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Efthymios Tsaprazlis , Tiantian Feng , Anil Ramakrishna , Rahul Gupta , Shrikanth Narayanan

Vision-Language Models (VLMs) have shown remarkable performance, yet their security remains insufficiently understood. Existing adversarial studies focus almost exclusively on the digital setting, leaving physical-world threats largely…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Yingying Zhao , Chengyin Hu , Qike Zhang , Xin Li , Xin Wang , Yiwei Wei , Jiujiang Guo , Jiahuan Long , Tingsong Jiang , Wen Yao

The increasing integration of Visual Language Models (VLMs) into AI systems necessitates robust model alignment, especially when handling multimodal content that combines text and images. Existing evaluation datasets heavily lean towards…

Computation and Language · Computer Science 2026-03-05 Gabriel Downer , Sean Craven , Damian Ruck , Jake Thomas