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Powerful autonomous systems, which reason, plan, and converse using and between numerous tools and agents, are made possible by Large Language Models (LLMs), Vision-Language Models (VLMs), and new agentic AI systems, like LangChain and…

Cryptography and Security · Computer Science 2025-12-30 Toqeer Ali Syed , Mishal Ateeq Almutairi , Mahmoud Abdel Moaty

As AI agents increasingly operate in complex environments, ensuring reliable, context-aware privacy is critical for regulatory compliance. Traditional access controls are insufficient because privacy risks often arise after access is…

Indirect prompt injection attacks threaten AI agents that execute consequential actions, motivating deterministic system-level defenses. Such defenses can provably block unsafe actions by enforcing confidentiality and integrity policies,…

Cryptography and Security · Computer Science 2026-02-13 Aashish Kolluri , Rishi Sharma , Manuel Costa , Boris Köpf , Tobias Nießen , Mark Russinovich , Shruti Tople , Santiago Zanella-Béguelin

AI agents increasingly call tools via the Model Context Protocol (MCP) and delegate to other agents via Agent-to-Agent (A2A), yet neither protocol verifies agent identity. A scan of approximately 2,000 MCP servers found all lacked…

Cryptography and Security · Computer Science 2026-03-27 Sunil Prakash

Enterprise AI is shifting from copilots to autonomous agents capable of executing workflows, negotiating outcomes, and making decisions with limited human oversight. As these systems extend across organizational boundaries, identity alone…

Cryptography and Security · Computer Science 2026-05-13 Partha Madhira

GitHub Actions is increasingly used to deploy LLM-based agents for repository-centric tasks such as issue triage, pull-request review, code modification, and release assistance. These agentic workflows extend traditional CI/CD automation…

Cryptography and Security · Computer Science 2026-05-11 Shenao Wang , Xinyi Hou , Zhao Liu , Yanjie Zhao , Xiao Cheng , Quanchen Zou , Xiangzheng Zhang , Haoyu Wang

Autonomous AI agents powered by large language models (LLMs) with structured function-calling interfaces enable real-time data retrieval, computation, and multi-step orchestration. However, the rapid growth of plugins, connectors, and…

Cryptography and Security · Computer Science 2025-12-16 Mohamed Amine Ferrag , Norbert Tihanyi , Djallel Hamouda , Leandros Maglaras , Abderrahmane Lakas , Merouane Debbah

Artificial intelligence (AI) agents are increasingly capable of initiating financial transactions on behalf of users or other agents. This evolution introduces a fundamental challenge: verifying both the authenticity of an autonomous agent…

Cryptography and Security · Computer Science 2025-11-21 Vivek Acharya

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

The emerging agentic web envisions AI agents that reliably fulfill users' natural-language (NL)-based tasks by interacting with existing web services. However, existing authorization models are misaligned with this vision. In particular,…

Cryptography and Security · Computer Science 2026-03-19 Reshabh K Sharma , Linxi Jiang , Zhiqiang Lin , Shuo Chen

Large language model (LLM) agents increasingly rely on external tools and retrieval systems to autonomously complete complex tasks. However, this design exposes agents to indirect prompt injection (IPI), where attacker-controlled context…

Cryptography and Security · Computer Science 2026-02-27 Tian Zhang , Yiwei Xu , Juan Wang , Keyan Guo , Xiaoyang Xu , Bowen Xiao , Quanlong Guan , Jinlin Fan , Jiawei Liu , Zhiquan Liu , Hongxin Hu

The safety of autonomous AI agents is increasingly recognized as a critical open problem. As agents transition from passive text generators to active actors capable of executing shell commands, modifying files, calling APIs, and browsing…

Artificial Intelligence · Computer Science 2026-05-19 Ashwin Aravind

Agentic AI systems automate enterprise workflows but existing defenses--guardrails, semantic filters--are probabilistic and routinely bypassed. We introduce authenticated workflows, the first complete trust layer for enterprise agentic AI.…

Cryptography and Security · Computer Science 2026-02-12 Mohan Rajagopalan , Vinay Rao

The rapid deployment of autonomous AI agents creates urgent challenges around authorization, accountability, and access control in digital spaces. New standards are needed to know whom AI agents act on behalf of and guide their use…

Computers and Society · Computer Science 2025-01-17 Tobin South , Samuele Marro , Thomas Hardjono , Robert Mahari , Cedric Deslandes Whitney , Dazza Greenwood , Alan Chan , Alex Pentland

Modern AI agents execute real-world side effects through tool calls such as file operations, shell commands, HTTP requests, and database queries. A single unsafe action, including accidental deletion, credential exposure, or data…

Artificial Intelligence · Computer Science 2026-05-07 Chenglin Yang

AI agents are autonomous entities that can be instantiated on demand, migrate across platforms, and interact with other agents or services without continuous human supervision. In such environments, identity is critical for establishing…

Cryptography and Security · Computer Science 2026-04-29 Minghui Xu , Xiaoyu Liu , Yihao Guo , Chunchi Liu , Yue Zhang , Xiuzhen Cheng

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

Large Language Model (LLM) agents are increasingly used to automate complex workflows, but integrating untrusted external data with privileged execution exposes them to severe security risks, particularly direct and indirect prompt…

Cryptography and Security · Computer Science 2026-04-28 Zonghao Ying , Haozheng Wang , Jiangfan Liu , Quanchen Zou , Aishan Liu , Jian Yang , Yaodong Yang , Xianglong Liu

Automation platforms such as GitHub Actions and n8n are increasingly adopting so-called agentic workflows, which integrate Large Language Model (LLM) agents for tasks such as code review and data synchronization. While bringing convenience…

Cryptography and Security · Computer Science 2026-05-13 Neil Fendley , Zhengyu Liu , Aonan Guan , Jiacheng Zhong , Yinzhi Cao

As multi-agent AI systems grow in complexity, the protocols connecting them constrain their capabilities. Current protocols such as A2A and MCP do not expose model-level properties as first-class primitives, ignoring properties fundamental…

Artificial Intelligence · Computer Science 2026-03-11 Sunil Prakash
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