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Language model (LM) agents that act on users' behalf for personal tasks (e.g., replying emails) can boost productivity, but are also susceptible to unintended privacy leakage risks. We present the first study on people's capacity to oversee…

Human-Computer Interaction · Computer Science 2025-10-07 Zhiping Zhang , Bingcan Guo , Tianshi Li

The expanding integration of Large Language Models (LLMs) into recommender systems poses critical challenges to evaluation reliability. This paper identifies and investigates a previously overlooked issue: benchmark data leakage in…

Machine Learning · Computer Science 2026-05-27 Mingqiao Zhang , Qiyao Peng , Yinghui Wang , Hongtao Liu , Yumeng Wang

LLM safety evaluations predominantly test models in isolation, yet deployed AI agents increasingly operate within persistent social environments alongside other agents. We introduce a Moltbook-style simulation platform where thousands of…

Artificial Intelligence · Computer Science 2026-05-28 Aman Priyanshu , Supriti Vijay , Esha Pahwa

Large language models (LLMs) have evolved into autonomous agents that rely on open skill ecosystems (e.g., ClawHub and Skills.Rest), hosting numerous publicly reusable skills. Existing security research on these ecosystems mainly focuses on…

Cryptography and Security · Computer Science 2026-04-20 Yukun Jiang , Yage Zhang , Michael Backes , Xinyue Shen , Yang Zhang

Large Language Models (LLMs) are deployed in interactive contexts with direct user engagement, such as chatbots and writing assistants. These deployments are vulnerable to prompt injection and jailbreaking (collectively, prompt hacking), in…

Multi-agent LLM systems introduce a security risk in which sensitive information accessed by one agent can propagate through shared context and reappear in downstream outputs, even without explicit adversarial intent. We formalise this…

Artificial Intelligence · Computer Science 2026-05-12 Riya Tapwal , Abhishek Kumar , Carsten Maple

Agent Skills, structured packages of procedural knowledge loaded into an LLM agent at inference time, are widely reported to improve task pass rates by an average of 16.2~percentage points across diverse domains. Yet the same benchmarks…

Artificial Intelligence · Computer Science 2026-05-26 Samuel Jacob Chacko , James Hugglestone , Chashi Mahiul Islam , Xiuwen Liu

Large language model (LLM) agents have demonstrated remarkable capabilities in software engineering and cybersecurity tasks, including code generation, vulnerability discovery, and automated testing. One critical but underexplored…

Software Engineering · Computer Science 2025-10-17 Bin Liu , Yanjie Zhao , Guoai Xu , Haoyu Wang

LLM-based agent systems increasingly rely on agent skills sourced from open registries to extend their capabilities, yet the openness of such ecosystems makes skills difficult to thoroughly vet. Existing attacks rely on injecting malicious…

Cryptography and Security · Computer Science 2026-04-08 Zenghao Duan , Yuxin Tian , Zhiyi Yin , Liang Pang , Jingcheng Deng , Zihao Wei , Shicheng Xu , Yuyao Ge , Xueqi Cheng

While automated vulnerability detection techniques have made promising progress in detecting security vulnerabilities, their scalability and applicability remain challenging. The remarkable performance of Large Language Models (LLMs), such…

Cryptography and Security · Computer Science 2024-10-24 Avishree Khare , Saikat Dutta , Ziyang Li , Alaia Solko-Breslin , Rajeev Alur , Mayur Naik

Large language models (LLMs) have achieved remarkable performance on a wide range of tasks. However, recent studies have shown that LLMs can memorize training data and simple repeated tokens can trick the model to leak the data. In this…

Cryptography and Security · Computer Science 2024-05-21 Yang Bai , Ge Pei , Jindong Gu , Yong Yang , Xingjun Ma

Large Language Models (LLMs) are increasingly used in education, yet their default helpfulness often conflicts with pedagogical principles. Prior work evaluates pedagogical quality via answer leakage-the disclosure of complete solutions…

Cryptography and Security · Computer Science 2026-04-22 Jin Zhao , Marta Knežević , Tanja Käser

Amid the expanding use of pre-training data, the phenomenon of benchmark dataset leakage has become increasingly prominent, exacerbated by opaque training processes and the often undisclosed inclusion of supervised data in contemporary…

Computation and Language · Computer Science 2024-04-30 Ruijie Xu , Zengzhi Wang , Run-Ze Fan , Pengfei Liu

Large Language Models (LLMs) are increasingly deployed as agents that orchestrate tasks and integrate external tools to execute complex workflows. We demonstrate that these interactive behaviors leave distinctive fingerprints in encrypted…

Cryptography and Security · Computer Science 2025-10-09 Yixiang Zhang , Xinhao Deng , Zhongyi Gu , Yihao Chen , Ke Xu , Qi Li , Jianping Wu

As AI agents become integral to enterprise workflows, their reliance on shared tool libraries and pre-trained components creates significant supply chain vulnerabilities. While previous work has demonstrated behavioral backdoor detection…

Cryptography and Security · Computer Science 2025-11-26 Arun Chowdary Sanna

Agent skills extend LLM agents with privileged third-party capabilities such as filesystem access, credentials, network calls, and shell execution. Existing safety work catches malicious prompts and risky runtime actions, but the skill…

Cryptography and Security · Computer Science 2026-05-13 Yuhao Wu , Tung-Ling Li , Hongliang Liu

LLM-powered applications routinely embed secrets in system prompts, yet models can be tricked into revealing them. We built an adaptive attacker that evolves its strategies over hundreds of rounds and tested it against nine defense…

Cryptography and Security · Computer Science 2026-05-14 Priyal Deep , Shane Emmons , Amy Fox , Kyle Bacon , Kelley McAllister , Peter Ortiz , Krisztian Flautner

Large language models (LLMs) have developed rapidly in recent years, revolutionizing various fields. Despite their widespread success, LLMs heavily rely on external code dependencies from package management systems, creating a complex and…

Cryptography and Security · Computer Science 2025-09-01 Shuhan Liu , Xing Hu , Xin Xia , David Lo , Xiaohu Yang

Large Language Models (LLMs) have become integral to various software engineering tasks, including code generation, bug detection, and repair. To evaluate model performance in these domains, numerous bug benchmarks containing real-world…

Software Engineering · Computer Science 2025-04-01 Daniel Ramos , Claudia Mamede , Kush Jain , Paulo Canelas , Catarina Gamboa , Claire Le Goues

Large Language Models for Code (LLMs4Code) have achieved strong performance in code generation, but recent studies reveal that they may memorize and leak sensitive information contained in training data, posing serious privacy risks. To…

Cryptography and Security · Computer Science 2026-01-29 Shanzhi Gu , Zhaoyang Qu , Ruotong Geng , Mingyang Geng , Shangwen Wang , Chuanfu Xu , Haotian Wang , Zhipeng Lin , Dezun Dong