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Agentic systems for business process automation often require compliance with policies governing conditional updates to the system state. Evaluation of policy adherence in LLM-based agentic workflows is typically performed by comparing the…

Computation and Language · Computer Science 2026-05-15 Ella Rabinovich , David Boaz , Naama Zwerdling , Ateret Anaby-Tavor

This paper introduces language-based agent control (LBAC), a new programming model for agentic applications that brings techniques from programming languages and language-based security to the problem of agent control. In conventional…

Programming Languages · Computer Science 2026-05-14 Timothy Zhou , Loris D'Antoni , Nadia Polikarpova

Agentic language-model systems increasingly rely on mutable execution contexts, including files, memory, tools, skills, and auxiliary artifacts, creating security risks beyond explicit user prompts. This paper presents DeepTrap, an…

Cryptography and Security · Computer Science 2026-05-13 Hongwei Yao , Yiming Liu , Yiling He , Bingrun Yang

The rapid evolution to autonomous, agentic AI systems introduces significant risks due to their inherent unpredictability and emergent behaviors; this also renders traditional verification methods inadequate and necessitates a shift towards…

Artificial Intelligence · Computer Science 2025-09-30 Roham Koohestani

AI agents interact with external environments through tool calls, exposing them to attacks like indirect prompt injection that can trigger unauthorized actions. Securing these agents is challenging: they behave autonomously and…

Cryptography and Security · Computer Science 2026-05-15 Tianneng Shi , Jingxuan He , Zhun Wang , Hongwei Li , Linyu Wu , Wenbo Guo , Dawn Song

Agents built on LLMs are increasingly deployed across diverse domains, automating complex decision-making and task execution. However, their autonomy introduces safety risks, including security vulnerabilities, legal violations, and…

Artificial Intelligence · Computer Science 2025-08-01 Haoyu Wang , Christopher M. Poskitt , Jun Sun

Large language models are increasingly being used to support network operations (NetOps) and artificial intelligence for IT operations (AIOps), including incident investigation, root-cause analysis, configuration synthesis, and limited…

Networking and Internet Architecture · Computer Science 2026-05-14 Muhammad Bilal , Jon Crowcroft , Ruizhi Wang , Xiaolong Xu , Schahram Dustdar

Web agents, powered by large language models (LLMs), are increasingly deployed to automate complex web interactions. The rise of open-source frameworks (e.g., Browser Use, Skyvern-AI) has accelerated adoption, but also broadened the attack…

Cryptography and Security · Computer Science 2026-01-13 Xinyi Wu , Geng Hong , Yueyue Chen , MingXuan Liu , Feier Jin , Xudong Pan , Jiarun Dai , Baojun Liu

Web agents powered by vision-language models (VLMs) enable autonomous interaction with web environments by perceiving and acting on both visual and textual webpage content to accomplish user-specified tasks. However, they are highly…

Cryptography and Security · Computer Science 2026-04-15 Yulin Chen , Tri Cao , Haoran Li , Yue Liu , Yibo Li , Yufei He , Le Minh Khoi , Yangqiu Song , Shuicheng Yan , Bryan Hooi

Agent frameworks increasingly encode tool-using behavior as explicit workflow graphs, yet safety enforcement remains a runtime concern. These frameworks expose analyzable graph structure through their APIs, enabling pre-deployment static…

Logic in Computer Science · Computer Science 2026-03-24 Melwin Xavier , Vaisakh M A , Melveena Jolly , Midhun Xavier

Tool-using LLM agents must act on untrusted webpages, emails, files, and API outputs while issuing privileged tool calls. Existing defenses often mediate trust at the granularity of an entire tool invocation, forcing a brittle choice in…

Cryptography and Security · Computer Science 2026-05-13 Linfeng Fan , Ziwei Li , Yuan Tian , Yichen Wang , Rongsheng Li , Xiong Wang

AI agents capable of GUI understanding and Model Context Protocol are increasingly deployed to automate mobile tasks. However, their reliance on over-privileged, static permissions creates a critical vulnerability: instruction injection.…

Cryptography and Security · Computer Science 2025-10-31 Yifeng Cai , Ziming Wang , Zhaomeng Deng , Mengyu Yao , Junlin Liu , Yutao Hu , Ziqi Zhang , Yao Guo , Ding Li

The rise of Large Language Model (LLM) agents, augmented with tool use, skills, and external knowledge, has introduced new security risks. Among them, prompt injection attacks, where adversaries embed malicious instructions into the agent…

Cryptography and Security · Computer Science 2026-05-06 Shihao Weng , Yang Feng , Jinrui Zhang , Xiaofei Xie , Jiongchi Yu , Jia Liu

The rapid advancement of large language model (LLM) agents has raised new concerns regarding their safety and security. In this paper, we propose GuardAgent, the first guardrail agent to protect target agents by dynamically checking whether…

Machine Learning · Computer Science 2025-05-30 Zhen Xiang , Linzhi Zheng , Yanjie Li , Junyuan Hong , Qinbin Li , Han Xie , Jiawei Zhang , Zidi Xiong , Chulin Xie , Carl Yang , Dawn Song , Bo Li

Large language model (LLM) agents increasingly issue API calls that mutate real systems, yet many current architectures pass stochastic model outputs directly to execution layers. We argue that this coupling creates a safety risk because…

Cryptography and Security · Computer Science 2026-04-27 Jun He , Deying Yu

Generative AI systems are increasingly used not only to produce content but also to retrieve data, invoke tools, and execute actions. This work examines the security and safety implications of that shift across content-level, model-level,…

Cryptography and Security · Computer Science 2026-05-19 Zelin Zhang , Qi Li , Jie Cao , Lingshuang Liu , Jianbing Ni

Large language models (LLMs) are increasingly deployed as agents with access to executable tools, enabling direct interaction with external systems. However, most safety evaluations remain text-centric and assume that compliant language…

Software Engineering · Computer Science 2026-03-24 Shasha Yu , Fiona Carroll , Barry L. Bentley

Despite their growing adoption across domains, large language model (LLM)-powered agents face significant security risks from backdoor attacks during training and fine-tuning. These compromised agents can subsequently be manipulated to…

Cryptography and Security · Computer Science 2025-06-12 Li Changjiang , Liang Jiacheng , Cao Bochuan , Chen Jinghui , Wang Ting

LLM-based agents solve complex tasks through iterative reasoning, tool use, and environment interaction, where each intermediate thought directly shapes subsequent actions. Small deviations in these thoughts can therefore propagate into…

Artificial Intelligence · Computer Science 2026-05-27 Changyue Jiang , Wenqi Zhang , Xudong Pan , Geng Hong , Min Yang

Large language models deployed as agents increasingly interact with external systems through tool calls--actions with real-world consequences that text outputs alone do not carry. Safety evaluations, however, overwhelmingly measure…

Artificial Intelligence · Computer Science 2026-02-20 Arnold Cartagena , Ariane Teixeira