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Transformer-based large language models (LLMs) provide a powerful foundation for natural language tasks in large-scale customer-facing applications. However, studies that explore their vulnerabilities emerging from malicious user…

计算与语言 · 计算机科学 2022-11-18 Fábio Perez , Ian Ribeiro

Large Vision-Language Models (LVLMs) can be vulnerable to adversarial images that subtly bias their outputs toward plausible yet incorrect responses. We introduce a general, efficient, and training-free defense that combines image…

计算机视觉与模式识别 · 计算机科学 2026-03-18 Nadav Kadvil , Malak Fares , Ayellet Tal

While Multimodal Large Language Models (MLLMs) show remarkable capabilities, their safety alignments are susceptible to jailbreak attacks. Existing attack methods typically focus on text-image interplay, treating the visual modality as a…

计算机视觉与模式识别 · 计算机科学 2025-12-03 Yuan Xiong , Ziqi Miao , Lijun Li , Chen Qian , Jie Li , Jing Shao

Large language models (LLMs) have shown remarkable performance in various tasks and have been extensively utilized by the public. However, the increasing concerns regarding the misuse of LLMs, such as plagiarism and spamming, have led to…

计算与语言 · 计算机科学 2024-05-16 Ning Lu , Shengcai Liu , Rui He , Qi Wang , Yew-Soon Ong , Ke Tang

As powerful Large Language Models (LLMs) are now widely used for numerous practical applications, their safety is of critical importance. While alignment techniques have significantly improved overall safety, LLMs remain vulnerable to…

机器学习 · 计算机科学 2024-10-28 Samuel Jacob Chacko , Sajib Biswas , Chashi Mahiul Islam , Fatema Tabassum Liza , Xiuwen Liu

Automated evidence-based misinformation detection systems, which evaluate the veracity of short claims against evidence, lack comprehensive analysis of their adversarial vulnerabilities. Existing black-box text-based adversarial attacks are…

计算与语言 · 计算机科学 2025-05-06 Mazal Bethany , Nishant Vishwamitra , Cho-Yu Jason Chiang , Peyman Najafirad

As Large Language Models (LLMs) grow increasingly powerful, multi-agent systems are becoming more prevalent in modern AI applications. Most safety research, however, has focused on vulnerabilities in single-agent LLMs. These include prompt…

多智能体系统 · 计算机科学 2024-10-11 Donghyun Lee , Mo Tiwari

Modern text-to-image (T2I) generation systems (e.g., DALL$\cdot$E 3) exploit the memory mechanism, which captures key information in multi-turn interactions for faithful generation. Despite its practicality, the security analyses of this…

计算机视觉与模式识别 · 计算机科学 2026-03-05 Shiqian Zhao , Jiayang Liu , Yiming Li , Runyi Hu , Xiaojun Jia , Wenshu Fan , Xiao Bao , Xinfeng Li , Jie Zhang , Wei Dong , Tianwei Zhang , Luu Anh Tuan

Multimodal Large Language Models (MLLMs) have achieved remarkable performance across vision-language tasks. Recent advancements allow these models to process multiple images as inputs. However, the vulnerabilities of multi-image MLLMs…

计算机视觉与模式识别 · 计算机科学 2026-01-30 Alvi Md Ishmam , Najibul Haque Sarker , Zaber Ibn Abdul Hakim , Chris Thomas

Malicious or manipulated prompts are known to exploit text-to-image models to generate unsafe images. Existing studies, however, focus on the passive exploitation of such harmful capabilities. In this paper, we investigate the proactive…

密码学与安全 · 计算机科学 2025-02-06 Yixin Wu , Ning Yu , Michael Backes , Yun Shen , Yang Zhang

Large language models (LLMs) are becoming increasingly prevalent in modern software systems, interfacing between the user and the Internet to assist with tasks that require advanced language understanding. To accomplish these tasks, the LLM…

密码学与安全 · 计算机科学 2025-07-04 Sizhe Chen , Arman Zharmagambetov , Saeed Mahloujifar , Kamalika Chaudhuri , David Wagner , Chuan Guo

Although deep neural networks have achieved state-of-the-art performance in various machine learning tasks, adversarial examples, constructed by adding small non-random perturbations to correctly classified inputs, successfully fool highly…

计算与语言 · 计算机科学 2022-05-02 Na Liu , Mark Dras , Wei Emma Zhang

Large Language Models (LLMs) increasingly employ alignment techniques to prevent harmful outputs. Despite these safeguards, attackers can circumvent them by crafting prompts that induce LLMs to generate harmful content. Current methods…

计算与语言 · 计算机科学 2025-10-21 Jiawei Lian , Jianhong Pan , Lefan Wang , Yi Wang , Shaohui Mei , Lap-Pui Chau

This position paper proposes a novel approach to advancing NLP security by leveraging Large Language Models (LLMs) as engines for generating diverse adversarial attacks. Building upon recent work demonstrating LLMs' effectiveness in…

人工智能 · 计算机科学 2024-10-25 Sudarshan Srinivasan , Maria Mahbub , Amir Sadovnik

Video classification systems based on Deep Neural Networks (DNNs) have demonstrated excellent performance in accurately verifying video content. However, recent studies have shown that DNNs are highly vulnerable to adversarial examples.…

计算机视觉与模式识别 · 计算机科学 2024-08-23 Duoxun Tang , Yuxin Cao , Xi Xiao , Derui Wang , Sheng Wen , Tianqing Zhu

Despite the impressive synthesis quality of text-to-image (T2I) diffusion models, their black-box deployment poses significant regulatory challenges: Malicious actors can fine-tune these models to generate illegal content, circumventing…

计算机视觉与模式识别 · 计算机科学 2025-03-31 Zhuomeng Zhang , Fangqi Li , Chong Di , Hongyu Zhu , Hanyi Wang , Shilin Wang

When large language model (LLM) agents are increasingly deployed to automate tasks and interact with untrusted external data, prompt injection emerges as a significant security threat. By injecting malicious instructions into the data that…

密码学与安全 · 计算机科学 2026-02-05 Yizhu Wang , Sizhe Chen , Raghad Alkhudair , Basel Alomair , David Wagner

Text-to-Image generation models have revolutionized the artwork design process and enabled anyone to create high-quality images by entering text descriptions called prompts. Creating a high-quality prompt that consists of a subject and…

密码学与安全 · 计算机科学 2024-04-16 Xinyue Shen , Yiting Qu , Michael Backes , Yang Zhang

Large-scale pre-trained generative models are taking the world by storm, due to their abilities in generating creative content. Meanwhile, safeguards for these generative models are developed, to protect users' rights and safety, most of…

密码学与安全 · 计算机科学 2024-10-14 Guanlin Li , Kangjie Chen , Shudong Zhang , Jie Zhang , Tianwei Zhang

Multimodal Language Models (MMLMs) typically undergo post-training alignment to prevent harmful content generation. However, these alignment stages focus primarily on the assistant role, leaving the user role unaligned, and stick to a fixed…

密码学与安全 · 计算机科学 2025-04-08 Erfan Shayegani , G M Shahariar , Sara Abdali , Lei Yu , Nael Abu-Ghazaleh , Yue Dong