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The strong planning and reasoning capabilities of Large Language Models (LLMs) have fostered the development of agent-based systems capable of leveraging external tools and interacting with increasingly complex environments. However, these…

Cryptography and Security · Computer Science 2025-06-17 Zhun Wang , Vincent Siu , Zhe Ye , Tianneng Shi , Yuzhou Nie , Xuandong Zhao , Chenguang Wang , Wenbo Guo , Dawn Song

A high volume of recent ML security literature focuses on attacks against aligned large language models (LLMs). These attacks may extract private information or coerce the model into producing harmful outputs. In real-world deployments,…

Machine Learning · Computer Science 2025-02-13 Ang Li , Yin Zhou , Vethavikashini Chithrra Raghuram , Tom Goldstein , Micah Goldblum

Personal AI agents like OpenClaw run with elevated privileges on users' local machines, where a single successful prompt injection can leak credentials, redirect financial transactions, or destroy files. This threat goes well beyond…

Artificial Intelligence · Computer Science 2026-04-07 Bowen Wei , Yunbei Zhang , Jinhao Pan , Kai Mei , Xiao Wang , Jihun Hamm , Ziwei Zhu , Yingqiang Ge

AI agents are autonomous systems that combine LLMs with external tools to solve complex tasks. While such tools extend capability, improper tool permissions introduce security risks such as indirect prompt injection and tool misuse. We…

Cryptography and Security · Computer Science 2026-01-21 Roy Betser , Shamik Bose , Amit Giloni , Chiara Picardi , Sindhu Padakandla , Roman Vainshtein

Although LLM-based agents, powered by Large Language Models (LLMs), can use external tools and memory mechanisms to solve complex real-world tasks, they may also introduce critical security vulnerabilities. However, the existing literature…

Cryptography and Security · Computer Science 2025-06-02 Hanrong Zhang , Jingyuan Huang , Kai Mei , Yifei Yao , Zhenting Wang , Chenlu Zhan , Hongwei Wang , Yongfeng Zhang

LLM agents process trusted instructions, retrieved records, and tool observations through a common generative channel. This conflates data flow with authority: an untrusted string can affect a secret-bearing response or an action proposal…

Cryptography and Security · Computer Science 2026-05-27 Faruk Alpay , Taylan Alpay

LLM-driven agents are capable of selecting external tools to complete users' tasks. However, attackers could compromise such process, steering agents toward inappropriate/wrong tools and enabling malicious actions. Most existing attacks…

Cryptography and Security · Computer Science 2026-05-27 Xuanye Zhang , Yongsen Zheng , Zhuqin Xu , Kaiyu Zhou , Bowen Shen , Haoran Ou , Tianwei Zhang , Kwok-Yan Lam

Large language model (LLM) agents have demonstrated remarkable capabilities in complex reasoning and decision-making by leveraging external tools. However, this tool-centric paradigm introduces a previously underexplored attack surface,…

Artificial Intelligence · Computer Science 2026-01-08 Kanghua Mo , Li Hu , Yucheng Long , Zhihao Li

LLM applications (i.e., LLM apps) leverage the powerful capabilities of LLMs to provide users with customized services, revolutionizing traditional application development. While the increasing prevalence of LLM-powered applications…

Cryptography and Security · Computer Science 2025-12-17 Yunyi Zhang , Shibo Cui , Baojun Liu , Jingkai Yu , Min Zhang , Fan Shi , Han Zheng

While LLM-based agents can interact with environments via invoking external tools, their expanded capabilities also amplify security risks. Monitoring step-level tool invocation behaviors in real time and proactively intervening before…

Computation and Language · Computer Science 2026-01-16 Yutao Mou , Zhangchi Xue , Lijun Li , Peiyang Liu , Shikun Zhang , Wei Ye , Jing Shao

The performance of large language model (LLM) agents depends critically on the execution harness, the system layer that orchestrates tool use, context management, and state persistence. Yet this same architectural centrality makes the…

Cryptography and Security · Computer Science 2026-05-12 Xixun Lin , Yang Liu , Yancheng Chen , Yongxuan Wu , Yucheng Ning , Yilong Liu , Nan Sun , Shun Zhang , Bin Chong , Chuan Zhou , Yanan Cao

Agentic AI has been a topic of great interest recently. A Large Language Model (LLM) agent involves one or more LLMs in the back-end. In the front end, it conducts autonomous decision-making by combining the LLM outputs with results…

Artificial Intelligence · Computer Science 2026-03-19 Yuntong Zhang , Sungmin Kang , Ruijie Meng , Marcel Böhme , Abhik Roychoudhury

Penetration-testing is crucial for identifying system vulnerabilities, with privilege-escalation being a critical subtask to gain elevated access to protected resources. Language Models (LLMs) presents new avenues for automating these…

Cryptography and Security · Computer Science 2026-02-12 Andreas Happe , Aaron Kaplan , Juergen Cito

Large language models (LLMs) increasingly act as autonomous agents, using tools to execute code, read and write files, and access networks, creating novel security risks. To mitigate these risks, agents are commonly deployed and evaluated…

Cryptography and Security · Computer Science 2026-03-04 Rahul Marchand , Art O Cathain , Jerome Wynne , Philippos Maximos Giavridis , Sam Deverett , John Wilkinson , Jason Gwartz , Harry Coppock

Large language models (LLMs) are increasingly deployed in real-world applications, raising concerns about their security. While jailbreak attacks highlight failures under overtly harmful queries, they overlook a critical risk: incorrectly…

Cryptography and Security · Computer Science 2025-06-10 Yukai Zhou , Sibei Yang , Wenjie Wang

With the emergence of high-performance large language models (LLMs) such as GPT, Claude, and Gemini, the autonomous and semi-autonomous execution of tasks has significantly advanced across various domains. However, in highly specialized…

Cryptography and Security · Computer Science 2025-02-24 Masaya Kobayashi , Masane Fuchi , Amar Zanashir , Tomonori Yoneda , Tomohiro Takagi

With ChatGPT-like large language models (LLM) prevailing in the community, how to evaluate the ability of LLMs is an open question. Existing evaluation methods suffer from following shortcomings: (1) constrained evaluation abilities, (2)…

Artificial Intelligence · Computer Science 2023-08-09 Jiaju Lin , Haoran Zhao , Aochi Zhang , Yiting Wu , Huqiuyue Ping , Qin Chen

Large Language Models (LLMs) are combined with tools to create powerful LLM agents that provide a wide range of services. Unlike traditional software, LLM agent's behavior is determined at runtime by natural language prompts from either…

Cryptography and Security · Computer Science 2025-04-22 Juhee Kim , Woohyuk Choi , Byoungyoung Lee

Third-party skills extend LLM agents with powerful capabilities but often handle sensitive credentials in privileged environments, making leakage risks poorly understood. We present the first large-scale empirical study of this problem,…

Cryptography and Security · Computer Science 2026-04-06 Zhihao Chen , Ying Zhang , Yi Liu , Gelei Deng , Yuekang Li , Yanjun Zhang , Jianting Ning , Leo Yu Zhang , Lei Ma , Zhiqiang Li

Large Language Models (LLMs) have gained widespread adoption across various domains, including chatbots and auto-task completion agents. However, these models are susceptible to safety vulnerabilities such as jailbreaking, prompt injection,…

Cryptography and Security · Computer Science 2024-09-10 Divyanshu Kumar , Anurakt Kumar , Sahil Agarwal , Prashanth Harshangi