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Large language model agents now act on codebases, browsers, operating systems, calendars, files, and tool ecosystems, but their evaluations often collapse behavior into final task success. AgentAtlas reframes agent evaluation as a…

Artificial Intelligence · Computer Science 2026-05-27 Parsa Mazaheri , Kasra Mazaheri

Agentic language models operate in a fundamentally different safety regime than chat models: they must plan, call tools, and execute long-horizon actions where a single misstep, such as accessing files or entering credentials, can cause…

Computation and Language · Computer Science 2026-03-04 Aradhye Agarwal , Gurdit Siyan , Yash Pandya , Joykirat Singh , Akshay Nambi , Ahmed Awadallah

LLM agents are highly vulnerable to Indirect Prompt Injection (IPI), where adversaries embed malicious directives in untrusted tool outputs to hijack execution. Most existing defenses treat IPI as an input-level semantic discrimination…

Cryptography and Security · Computer Science 2026-03-12 Yu He , Haozhe Zhu , Yiming Li , Shuo Shao , Hongwei Yao , Zhihao Liu , Zhan Qin

Multi-agent systems coordinate LLM-based agents to perform tasks on users' behalf. In real-world applications, multi-agent systems will inevitably interact with untrusted inputs, such as malicious Web content, files, email attachments, and…

Cryptography and Security · Computer Science 2025-09-16 Harold Triedman , Rishi Jha , Vitaly Shmatikov

Agentic AI marks an important transition from single-step generative models to systems capable of reasoning, planning, acting, and adapting over long-lasting tasks. By integrating memory, tool use, and iterative decision cycles, these…

Cryptography and Security · Computer Science 2026-01-12 Sahaya Jestus Lazer , Kshitiz Aryal , Maanak Gupta , Elisa Bertino

Structured-workflow agents driven by large language models execute tool calls against sensitive external environments. We propose \codename, a telemetry-driven behavioral anomaly detection firewall. Drawing on sequence-based intrusion…

Cryptography and Security · Computer Science 2026-04-30 Hung Dang

Authorizing Large Language Model (LLM)-driven agents to dynamically invoke tools and access protected resources introduces significant security risks, and the risks grow dramatically as agents engage in multi-turn conversations and scale…

Artificial Intelligence · Computer Science 2026-05-05 Majed El Helou , Benjamin Ryder , Chiara Troiani , Jean Diaconu , Hervé Muyal , Marcelo Yannuzzi

Agentic methods have emerged as a powerful and autonomous paradigm that enhances reasoning, collaboration, and adaptive control, enabling systems to coordinate and independently solve complex tasks. We extend this paradigm to safety…

Artificial Intelligence · Computer Science 2025-10-30 Juan Ren , Mark Dras , Usman Naseem

This position paper argues that the Authorization-Execution Gap (AEG) is a major safety and security problem in open-world agents. The AEG is the divergence between what a principal intends to authorize and what an open-world agent…

Cryptography and Security · Computer Science 2026-05-13 Baoyuan Wu , Qingshan Liu , Adel Bibi , Irwin King , Siwei Lyu

Autonomous AI agents can remain fully authorized and still become unsafe as behavior drifts, adversaries adapt, and decision patterns shift without any code change. We propose the \textbf{Informational Viability Principle}: governing an…

Artificial Intelligence · Computer Science 2026-04-28 German Marin , Jatin Chaudhary

As artificial intelligence systems evolve from passive assistants into autonomous agents capable of executing consequential actions, the security boundary shifts from model outputs to tool execution. Traditional security paradigms - log…

Cryptography and Security · Computer Science 2026-02-11 Herman Errico

Tool-Based Agent Systems (TBAS) allow Language Models (LMs) to use external tools for tasks beyond their standalone capabilities, such as searching websites, booking flights, or making financial transactions. However, these tools greatly…

Cryptography and Security · Computer Science 2025-02-17 Peter Yong Zhong , Siyuan Chen , Ruiqi Wang , McKenna McCall , Ben L. Titzer , Heather Miller , Phillip B. Gibbons

Tool-using agents increasingly operate in open-ended deployment environments, where they compose file systems, web APIs, code interpreters, and enterprise services at runtime. This creates a safety gap in tool composition: an agent can…

Cryptography and Security · Computer Science 2026-05-27 Xiaochong Jiang , Shiqi Yang , Ziwei Li , Lifei Liu , Haoran Yu , Yichen Liu

Question-and-answer agents like ChatGPT offer a novel tool for use as a potential honeypot interface in cyber security. By imitating Linux, Mac, and Windows terminal commands and providing an interface for TeamViewer, nmap, and ping, it is…

Cryptography and Security · Computer Science 2023-01-11 Forrest McKee , David Noever

Computer-use agents are increasingly capable of operating on real operating systems, but this capability has also increased the risks posed by prompt injection, indirect instructions, and visual attacks. Existing defenses typically rely on…

Computation · Statistics 2026-05-14 Kebin Contreras , Carlos Hinojosa , Jorge Bacca , Bernard Ghanem

For safety reasons, large language models (LLMs) are trained to refuse harmful user instructions, such as assisting dangerous activities. We study an open question in this work: does the desired safety refusal, typically enforced in chat…

Recent advances in foundation models have transformed LLMs from passive conversational systems into autonomous agents capable of reasoning and tool execution. While these capabilities unlock substantial practical value, they also introduce…

Cryptography and Security · Computer Science 2026-05-25 Zhe Liu , Zonghao Ying , Wenxin Zhang , Quanchen Zou , Deyue Zhang , Dongdong Yang , Xiangzheng Zhang , Hao Peng

Large language models (LLMs) are increasingly deployed as educational agents for automatic short answer grading (ASAG) in real-world educational environments, significantly boosting assessment efficiency and scalability. However, when these…

Cryptography and Security · Computer Science 2026-05-25 Xueyi Li , Zhuoneng Zhou , Zitao Liu , Yongdong Wu

Humans solve problems by executing targeted plans, yet large language models (LLMs) remain unreliable for structured workflow execution. We propose RunAgent, a multi-agent plan execution platform that interprets natural-language plans while…

Machine Learning · Computer Science 2026-05-04 Arunabh Srivastava , Mohammad A. , Khojastepour , Srimat Chakradhar , Sennur Ulukus

Large Language Model (LLM)-based agent systems are increasingly deployed for complex real-world tasks but remain vulnerable to natural language-based attacks that exploit over-privileged tool use. This paper aims to understand and mitigate…

Cryptography and Security · Computer Science 2026-01-21 Zimo Ji , Daoyuan Wu , Wenyuan Jiang , Pingchuan Ma , Zongjie Li , Yudong Gao , Shuai Wang , Yingjiu Li