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Model Context Protocols (MCPs) provide a unified platform for agent systems to discover, select, and orchestrate tools across heterogeneous execution environments. As MCP-based systems scale to incorporate larger tool catalogs and multiple…

Cryptography and Security · Computer Science 2026-02-19 Yuval Felendler , Parth A. Gandhi , Idan Habler , Yuval Elovici , Asaf Shabtai

The rapid evolution of Large Language Model (LLM)-based autonomous agents is reshaping the digital landscape toward an emerging Agentic Web, where increasingly specialized agents must collaborate to accomplish complex tasks. However,…

Networking and Internet Architecture · Computer Science 2026-02-25 Xiaohang Nie , Zihan Guo , Youliang Chen , Yuanjian Zhou , Weinan Zhang

Large language model (LLM) agents increasingly rely on skills to package reusable capabilities through instructions, tools, and resources. High-quality skills embed expert knowledge, curated workflows, and execution constraints into agents,…

Cryptography and Security · Computer Science 2026-04-28 Zihan Wang , Rui Zhang , Yu Liu , Chi Liu , Qingchuan Zhao , Hongwei Li , Guowen Xu

Today's AI agents are built on large language models (LLMs) equipped with tools to access and modify external environments, such as corporate file systems, API-accessible platforms and websites. AI agents offer the promise of automating…

Computers and Society · Computer Science 2026-03-26 Merlin Stein

Large language models (LLMs) increasingly rely on retrieving information from external corpora. This creates a new attack surface: indirect prompt injection (IPI), where hidden instructions are planted in the corpora and hijack model…

Cryptography and Security · Computer Science 2026-01-13 Hongyan Chang , Ergute Bao , Xinjian Luo , Ting Yu

This paper introduces Agentic-AI Healthcare, a privacy-aware, multilingual, and explainable research prototype developed as a single-investigator project. The system leverages the emerging Model Context Protocol (MCP) to orchestrate…

Cryptography and Security · Computer Science 2025-10-06 Mohammed A. Shehab

LLM agents have begun to appear as personal assistants, customer service bots, and clinical aides. While these applications deliver substantial operational benefits, they also require continuous access to sensitive data, which increases the…

Cryptography and Security · Computer Science 2025-09-30 Saswat Das , Jameson Sandler , Ferdinando Fioretto

Large Language Models (LLMs) exhibit impressive general-purpose capabilities but also introduce serious safety risks, particularly the potential for deception as models acquire increased agency and human oversight diminishes. In this work,…

Artificial Intelligence · Computer Science 2026-03-10 Matthew Lyle Olson , Neale Ratzlaff , Musashi Hinck , Tri Nguyen , Vasudev Lal , Joseph Campbell , Simon Stepputtis , Shao-Yen Tseng

Large Language Models (LLMs) remain static in functionality after training, and extending their capabilities requires integration with external data, computation, and services. The Model Context Protocol (MCP) has emerged as a standard…

Networking and Internet Architecture · Computer Science 2025-10-16 Enhan Li , Hongyang Du , Kaibin Huang

Multi-agent systems (MAS) extend large language models (LLMs) from independent single-model reasoning to coordinative system-level intelligence. While existing LLM agents depend on text-based mediation for reasoning and communication, we…

Computation and Language · Computer Science 2025-12-09 Jiaru Zou , Xiyuan Yang , Ruizhong Qiu , Gaotang Li , Katherine Tieu , Pan Lu , Ke Shen , Hanghang Tong , Yejin Choi , Jingrui He , James Zou , Mengdi Wang , Ling Yang

The Model Context Protocol (MCP) is an open and standardized interface that enables large language models (LLMs) to interact with external tools and services, and is increasingly adopted by AI agents. However, the security of MCP-based…

Cryptography and Security · Computer Science 2026-03-10 Yuhang Huang , Boyang Ma , Biwei Yan , Xuelong Dai , Yechao Zhang , Minghui Xu , Kaidi Xu , Yue Zhang

Multi-agent Large Language Model (LLM) systems create privacy risks that current benchmarks cannot measure. When agents coordinate on tasks, sensitive data passes through inter-agent messages, shared memory, and tool arguments, all pathways…

Artificial Intelligence · Computer Science 2026-03-31 Faouzi El Yagoubi , Godwin Badu-Marfo , Ranwa Al Mallah

Multi-agent systems powered by Large Language Models (LLM-MAS) have demonstrated remarkable capabilities in collaborative problem-solving. However, their deployment also introduces new security risks. Existing research on LLM-based agents…

Multiagent Systems · Computer Science 2025-10-07 Yizhe Xie , Congcong Zhu , Xinyue Zhang , Tianqing Zhu , Dayong Ye , Minghao Wang , Chi Liu

Automated intrusion-style workflows require LLM agents to reason over partial observations, tool outputs, and executable artifacts under bounded budgets. A single LLM instance often compresses evidence extraction, planning, execution, and…

Cryptography and Security · Computer Science 2026-05-12 Minfeng Qi , Tianqing Zhu , Zijie Xu , Congcong Zhu , Qin Wang , Wanlei Zhou

The agent--tool interaction loop is a critical attack surface for modern Large Language Model (LLM) agents. Existing denial-of-service (DoS) attacks typically function at the user-prompt or retrieval-augmented generation (RAG) context layer…

Cryptography and Security · Computer Science 2026-03-12 Kaiyu Zhou , Yongsen Zheng , Yicheng He , Meng Xue , Xueluan Gong , Yuji Wang , Xuanye Zhang , Kwok-Yan Lam

Tool-augmented Large Language Model (LLM) agents have demonstrated impressive capabilities in automating complex, multi-step real-world tasks, yet remain vulnerable to indirect prompt injection. Adversaries exploit this weakness by…

Cryptography and Security · Computer Science 2026-05-12 Wei Zhao , Zhe Li , Peixin Zhang , Jun Sun

The proliferation of agentic AI coding assistants, including Claude Code, GitHub Copilot, Cursor, and emerging skill-based architectures, has fundamentally transformed software development workflows. These systems leverage Large Language…

Cryptography and Security · Computer Science 2026-01-27 Narek Maloyan , Dmitry Namiot

Large Language Models (LLMs) have demonstrated remarkable capabilities in natural language understanding, code generation, and complex planning. Simultaneously, Multi-Agent Systems (MAS) have garnered attention for their potential to enable…

Computation and Language · Computer Science 2025-06-06 Can Zheng , Yuhan Cao , Xiaoning Dong , Tianxing He

The integration of large language models (LLMs) into enterprise systems has introduced a new class of covert security vulnerabilities, particularly within logic execution layers and persistent memory contexts. This paper introduces…

Cryptography and Security · Computer Science 2025-08-08 Hammad Atta , Ken Huang , Manish Bhatt , Kamal Ahmed , Muhammad Aziz Ul Haq , Yasir Mehmood

Large Language Models (LLMs) are increasingly deployed in sensitive domains including healthcare, legal services, and confidential communications, where privacy is paramount. This paper introduces Whisper Leak, a side-channel attack that…

Cryptography and Security · Computer Science 2025-11-06 Geoff McDonald , Jonathan Bar Or