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Related papers: WebInject: Prompt Injection Attack to Web Agents

200 papers

Prompt injection is one of the most critical vulnerabilities in LLM agents; yet, effective automated attacks remain largely unexplored from an optimization perspective. Existing methods heavily depend on human red-teamers and hand-crafted…

Machine Learning · Computer Science 2026-02-23 Xin Chen , Jie Zhang , Florian Tramèr

Large Language Models (LLMs), renowned for their superior proficiency in language comprehension and generation, stimulate a vibrant ecosystem of applications around them. However, their extensive assimilation into various services…

Cryptography and Security · Computer Science 2025-12-30 Yi Liu , Gelei Deng , Yuekang Li , Kailong Wang , Zihao Wang , Xiaofeng Wang , Tianwei Zhang , Yepang Liu , Haoyu Wang , Yan Zheng , Leo Yu Zhang , Yang Liu

AI agents, predominantly powered by large language models (LLMs), are vulnerable to indirect prompt injection, in which malicious instructions embedded in untrusted data can trigger dangerous agent actions. This position paper discusses our…

Cryptography and Security · Computer Science 2026-04-01 Chong Xiang , Drew Zagieboylo , Shaona Ghosh , Sanjay Kariyappa , Kai Greshake , Hanshen Xiao , Chaowei Xiao , G. Edward Suh

Efficiently solving real-world problems with LLMs increasingly hinges on their ability to interact with dynamic web environments and autonomously acquire external information. While recent research like Search-R1 and WebDancer demonstrates…

Computation and Language · Computer Science 2025-10-15 Tao Yu , Zhengbo Zhang , Zhiheng Lyu , Junhao Gong , Hongzhu Yi , Xinming Wang , Yuxuan Zhou , Jiabing Yang , Ping Nie , Yan Huang , Wenhu Chen

We introduce a new type of indirect, cross-modal injection attacks against visual language models that enable creation of self-interpreting images. These images contain hidden "meta-instructions" that control how models answer users'…

Cryptography and Security · Computer Science 2025-06-16 Tingwei Zhang , Collin Zhang , John X. Morris , Eugene Bagdasarian , Vitaly Shmatikov

How does one adapt a pre-trained visual model to novel downstream tasks without task-specific finetuning or any model modification? Inspired by prompting in NLP, this paper investigates visual prompting: given input-output image example(s)…

Computer Vision and Pattern Recognition · Computer Science 2022-09-02 Amir Bar , Yossi Gandelsman , Trevor Darrell , Amir Globerson , Alexei A. Efros

Large language model (LLM) agents have shown impressive reasoning capabilities in interactive decision-making tasks. These agents interact with environment through intermediate interfaces, such as predefined action spaces and interaction…

Artificial Intelligence · Computer Science 2025-05-28 Kaiming Liu , Xuanyu Lei , Ziyue Wang , Peng Li , Yang Liu

Web agents--autonomous systems that navigate and execute tasks on the web on behalf of users--have the potential to transform how people interact with the digital world. However, the most capable web agents today rely on proprietary models…

The widespread adoption of thinking mode in large language models (LLMs) has significantly enhanced complex task processing capabilities while introducing new security risks. When subjected to jailbreak attacks, the step-by-step reasoning…

Cryptography and Security · Computer Science 2026-03-12 Fan Yang

We address the challenge of generating diverse attack prompts for large language models (LLMs) that elicit harmful behaviors (e.g., insults, sexual content) and are used for safety fine-tuning. Rather than relying on manual prompt…

Machine Learning · Computer Science 2025-10-07 Taeyoung Yun , Pierre-Luc St-Charles , Jinkyoo Park , Yoshua Bengio , Minsu Kim

Large Language Model (LLM)-based agents have emerged as a transformative approach for open-ended problem solving, with information seeking (IS) being a core capability that enables autonomous reasoning and decision-making. While prior…

Computer-Use Agents (CUAs) with full system access enable powerful task automation but pose significant security and privacy risks due to their ability to manipulate files, access user data, and execute arbitrary commands. While prior work…

Artificial Intelligence · Computer Science 2026-03-03 Tri Cao , Bennett Lim , Yue Liu , Yuan Sui , Yuexin Li , Shumin Deng , Lin Lu , Nay Oo , Shuicheng Yan , Bryan Hooi

Text animation, a foundational element in video creation, enables efficient and cost-effective communication, thriving in advertisements, journalism, and social media. However, traditional animation workflows present significant usability…

Human-Computer Interaction · Computer Science 2025-06-13 Bao Zhang , Zihan Li , Zhenglei Liu , Huanchen Wang , Yuxin Ma

Large language models (LLMs) have gained widespread adoption across diverse applications due to their impressive generative capabilities. Their plug-and-play nature enables both developers and end users to interact with these models through…

Cryptography and Security · Computer Science 2025-10-21 Zongze Li , Jiawei Guo , Haipeng Cai

Multimodal Large Language Models (MLLMs) represent the cutting edge of AI technology, with DeepSeek models emerging as a leading open-source alternative offering competitive performance to closed-source systems. While these models…

Computer Vision and Pattern Recognition · Computer Science 2025-02-13 Chashi Mahiul Islam , Samuel Jacob Chacko , Preston Horne , Xiuwen Liu

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…

Cryptography and Security · Computer Science 2026-02-05 Yizhu Wang , Sizhe Chen , Raghad Alkhudair , Basel Alomair , David Wagner

Large language models (LLMs) have been widely applied for their remarkable capability of content generation. However, the practical use of open-source LLMs is hindered by high resource requirements, making deployment expensive and limiting…

Cryptography and Security · Computer Science 2025-05-05 Wenjie Qu , Yuguang Zhou , Yongji Wu , Tingsong Xiao , Binhang Yuan , Yiming Li , Jiaheng Zhang

Language models remain vulnerable to prompt injection attacks despite extensive safety training. We trace this failure to role confusion: models infer the source of text based on how it sounds, not where it actually comes from. A command…

Computation and Language · Computer Science 2026-04-17 Charles Ye , Jasmine Cui , Dylan Hadfield-Menell

LLMs have recently demonstrated strong potential in simulating online shopper behavior. Prior work has improved action prediction by applying SFT on action traces with LLM-generated rationales, and by leveraging RL to further enhance…

Computers and Society · Computer Science 2025-10-23 Yimeng Zhang , Jiri Gesi , Ran Xue , Tian Wang , Ziyi Wang , Yuxuan Lu , Sinong Zhan , Huimin Zeng , Qingjun Cui , Yufan Guo , Jing Huang , Mubarak Shah , Dakuo Wang

The vulnerability of deep neural networks to adversarial attacks has been widely demonstrated (e.g., adversarial example attacks). Traditional attacks perform unstructured pixel-wise perturbation to fool the classifier. An alternative…

Machine Learning · Computer Science 2022-05-23 Shuo Wang , Surya Nepal , Carsten Rudolph , Marthie Grobler , Shangyu Chen , Tianle Chen