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We study typographic prompt injection attacks on vision-language models (VLMs), where adversarial text is rendered as images to bypass safety mechanisms, posing a growing threat as VLMs serve as the perceptual backbone of autonomous agents,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Ravikumar Balakrishnan , Sanket Mendapara , Ankit Garg

The advent of Large Language Models (LLMs) has marked significant achievements in language processing and reasoning capabilities. Despite their advancements, LLMs face vulnerabilities to data poisoning attacks, where the adversary inserts…

Machine Learning · Computer Science 2025-05-30 Xiangyu Zhou , Yao Qiang , Saleh Zare Zade , Mohammad Amin Roshani , Prashant Khanduri , Douglas Zytko , Dongxiao Zhu

The integration of vision-language models (VLMs) is driving a new generation of embodied agents capable of operating in human-centered environments. However, as deployment expands, these systems face growing safety risks, particularly when…

Cryptography and Security · Computer Science 2025-10-21 Zonghao Ying , Le Wang , Yisong Xiao , Jiakai Wang , Yuqing Ma , Jinyang Guo , Zhenfei Yin , Mingchuan Zhang , Aishan Liu , Xianglong Liu

Recently, Vision Language Models (VLMs) have experienced significant advancements, yet these models still face challenges in spatial hierarchical reasoning within indoor scenes. In this study, we introduce ROOT, a VLM-based system designed…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Yonghui Wang , Shi-Yong Chen , Zhenxing Zhou , Siyi Li , Haoran Li , Wengang Zhou , Houqiang Li

Image retrieval plays an important role in the Internet world. Usually, the core parts of mainstream visual retrieval systems include an online service of the embedding model and a large-scale vector database. For traditional model…

Computer Vision and Pattern Recognition · Computer Science 2023-05-05 Tan Pan , Furong Xu , Xudong Yang , Sifeng He , Chen Jiang , Qingpei Guo , Feng Qian Xiaobo Zhang , Yuan Cheng , Lei Yang , Wei Chu

Recent advancements in Vision-Language-Action (VLA) models have leveraged pre-trained Vision-Language Models (VLMs) to improve the generalization capabilities. VLMs, typically pre-trained on vision-language understanding tasks, provide rich…

Computer Vision and Pattern Recognition · Computer Science 2025-06-27 Jianke Zhang , Yanjiang Guo , Yucheng Hu , Xiaoyu Chen , Xiang Zhu , Jianyu Chen

We investigate a new method for injecting backdoors into machine learning models, based on compromising the loss-value computation in the model-training code. We use it to demonstrate new classes of backdoors strictly more powerful than…

Cryptography and Security · Computer Science 2021-02-22 Eugene Bagdasaryan , Vitaly Shmatikov

Large Language Models (LLMs), which bridge the gap between human language understanding and complex problem-solving, achieve state-of-the-art performance on several NLP tasks, particularly in few-shot and zero-shot settings. Despite the…

Cryptography and Security · Computer Science 2025-01-07 Shuai Zhao , Meihuizi Jia , Zhongliang Guo , Leilei Gan , Xiaoyu Xu , Xiaobao Wu , Jie Fu , Yichao Feng , Fengjun Pan , Luu Anh Tuan

There have been several efforts in backdoor attacks, but these have primarily focused on the closed-set performance of classifiers (i.e., classification). This has left a gap in addressing the threat to classifiers' open-set performance,…

Machine Learning · Computer Science 2024-12-09 ZeinabSadat Taghavi , Hossein Mirzaei

The widespread use of cameras in our society has created an overwhelming amount of video data, far exceeding the capacity for human monitoring. This presents a critical challenge for public safety and security, as the timely detection of…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Pascal Benschop , Cristian Meo , Justin Dauwels , Jelte P. Mense

The realization of Artificial General Intelligence (AGI) necessitates Embodied AI agents capable of robust spatial perception, effective task planning, and adaptive execution in physical environments. However, current large language models…

Backdoor attacks pose a significant threat to neural networks, enabling adversaries to manipulate model outputs on specific inputs, often with devastating consequences, especially in critical applications. While backdoor attacks have been…

Machine Learning · Computer Science 2025-07-30 Zhen Guo , Abhinav Kumar , Reza Tourani

Deep neural networks (DNNs) are vulnerable to backdoor attacks. The backdoor adversaries intend to maliciously control the predictions of attacked DNNs by injecting hidden backdoors that can be activated by adversary-specified trigger…

Cryptography and Security · Computer Science 2023-03-07 Tong Xu , Yiming Li , Yong Jiang , Shu-Tao Xia

Reinforcement Learning (RL) agents often struggle to generalize knowledge to new tasks, even those structurally similar to ones they have mastered. Although recent approaches have attempted to mitigate this issue via zero-shot transfer,…

Artificial Intelligence · Computer Science 2026-04-13 Ajsal Shereef Palattuparambil , Thommen George Karimpanal , Santu Rana

As the real propagation environment becomes in creasingly complex and dynamic, millimeter wave beam prediction faces huge challenges. However, the powerful cross modal representation capability of vision-language model (VLM) provides a…

Signal Processing · Electrical Eng. & Systems 2025-08-18 Ji Wang , Bin Tang , Jian Xiao , Qimei Cui , Xingwang Li , Tony Q. S. Quek

Adversarial attacks have evolved from simply disrupting predictions on conventional task-specific models to the more complex goal of manipulating image semantics on Large Vision-Language Models (LVLMs). However, existing methods struggle…

Computer Vision and Pattern Recognition · Computer Science 2026-03-11 Sen Nie , Jie Zhang , Jianxin Yan , Shiguang Shan , Xilin Chen

At present, backdoor attacks attract attention as they do great harm to deep learning models. The adversary poisons the training data making the model being injected with a backdoor after being trained unconsciously by victims using the…

Cryptography and Security · Computer Science 2023-03-06 Shengfang Zhai , Qingni Shen , Xiaoyi Chen , Weilong Wang , Cong Li , Yuejian Fang , Zhonghai Wu

In recent years, there has been an explosive growth in multimodal learning. Image captioning, a classical multimodal task, has demonstrated promising applications and attracted extensive research attention. However, recent studies have…

Cryptography and Security · Computer Science 2024-06-11 Wenshu Fan , Hongwei Li , Wenbo Jiang , Meng Hao , Shui Yu , Xiao Zhang

User-Centric Embodied Visual Tracking (UC-EVT) presents a novel challenge for reinforcement learning-based models due to the substantial gap between high-level user instructions and low-level agent actions. While recent advancements in…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Kui Wu , Hao Chen , Churan Wang , Fakhri Karray , Zhoujun Li , Yizhou Wang , Fangwei Zhong

Vision-language models (VLMs) seamlessly integrate visual and textual data to perform tasks such as image classification, caption generation, and visual question answering. However, adversarial images often struggle to deceive all prompts…

Multimedia · Computer Science 2024-06-21 Xikang Yang , Xuehai Tang , Fuqing Zhu , Jizhong Han , Songlin Hu