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As artificial intelligence (AI) assistants become more widely adopted in safety-critical domains, it becomes important to develop safeguards against potential failures or adversarial attacks. A key prerequisite to developing these…

Human-Computer Interaction · Computer Science 2025-04-04 Abed Kareem Musaffar , Anand Gokhale , Sirui Zeng , Rasta Tadayon , Xifeng Yan , Ambuj Singh , Francesco Bullo

Large language model (LLM) agents increasingly operate in settings where a single context window is far too small to capture what has happened, what was learned, and what should not be repeated. Memory -- the ability to persist, organize,…

Artificial Intelligence · Computer Science 2026-03-10 Pengfei Du

Multi-agent systems (MAS) powered by LLMs promise adaptive, reasoning-driven enterprise workflows, yet granting agents autonomous control over tools, memory, and communication introduces attack surfaces absent from deterministic pipelines.…

Cryptography and Security · Computer Science 2026-03-11 Shaswata Mitra , Raj Patel , Sudip Mittal , Md Rayhanur Rahman , Shahram Rahimi

Persistent memory is a central capability for AI agents, yet the mathematical foundations of memory retrieval, lifecycle management, and consistency remain unexplored. Current systems employ cosine similarity for retrieval, heuristic decay…

Artificial Intelligence · Computer Science 2026-03-17 Varun Pratap Bhardwaj

AI-agent guardrails are memoryless: each message is judged in isolation, so an adversary who spreads a single attack across dozens of sessions slips past every session-bound detector because only the aggregate carries the payload. We make…

Cryptography and Security · Computer Science 2026-04-24 Ari Azarafrooz

Large language model agents equipped with persistent memory are vulnerable to memory poisoning attacks, where adversaries inject malicious instructions through query only interactions that corrupt the agents long term memory and influence…

Cryptography and Security · Computer Science 2026-01-13 Balachandra Devarangadi Sunil , Isheeta Sinha , Piyush Maheshwari , Shantanu Todmal , Shreyan Mallik , Shuchi Mishra

Predictions of certifiably robust classifiers remain constant in a neighborhood of a point, making them resilient to test-time attacks with a guarantee. In this work, we present a previously unrecognized threat to robust machine learning…

Machine Learning · Computer Science 2021-03-31 Akshay Mehra , Bhavya Kailkhura , Pin-Yu Chen , Jihun Hamm

With the widespread application of Large Language Models (LLMs), their associated security issues have become increasingly prominent, severely constraining their trustworthy deployment in critical domains. This paper proposes a novel safety…

Artificial Intelligence · Computer Science 2025-11-18 Qi Li , Jianjun Xu , Pingtao Wei , Jiu Li , Peiqiang Zhao , Jiwei Shi , Xuan Zhang , Yanhui Yang , Xiaodong Hui , Peng Xu , Wenqin Shao

Machine learning (ML) underpins foundation models in finance, healthcare, and critical infrastructure, making them targets for data poisoning, model extraction, prompt injection, automated jailbreaking, and preference-guided black-box…

Cryptography and Security · Computer Science 2025-12-30 Armstrong Foundjem , Lionel Nganyewou Tidjon , Leuson Da Silva , Foutse Khomh

The rapid evolution of Large Language Models (LLMs) into autonomous, tool-calling agents has fundamentally altered the cybersecurity landscape. Frameworks like OpenClaw grant AI systems operating-system-level permissions and the autonomy to…

Cryptography and Security · Computer Science 2026-03-16 Zonghao Ying , Xiao Yang , Siyang Wu , Yumeng Song , Yang Qu , Hainan Li , Tianlin Li , Jiakai Wang , Aishan Liu , Xianglong Liu

Multi-agent AI pipelines typically assume that agent misconduct originates from model misalignment. We identify a structural failure in this assumption, the \emph{Misattribution Gap}, where memory-layer attacks produce behaviors…

Cryptography and Security · Computer Science 2026-05-25 Tanzim Ahad , Ismail Hossain , Md Jahangir Alam , Sai Puppala , Syed Bahauddin Alam , Sajedul Talukder

Local fine-tuning datasets routinely contain sensitive secrets such as API keys, personal identifiers, and financial records. Although ''local offline fine-tuning'' is often viewed as a privacy boundary, we reveal that compromised model…

Cryptography and Security · Computer Science 2026-05-01 Zi Li , Tian Zhou , Wenze Li , Jingyu Hua , Yunlong Mao , Sheng Zhong

Indirect prompt injection threatens LLM agents by embedding malicious instructions in external content, enabling unauthorized actions and data theft. LLM agents maintain working memory through their context window, which stores interaction…

Cryptography and Security · Computer Science 2026-02-10 Ruoyao Wen , Hao Li , Chaowei Xiao , Ning Zhang

Memory plays a foundational role in augmenting the reasoning, adaptability, and contextual fidelity of modern Large Language Models and Multi-Modal LLMs. As these models transition from static predictors to interactive systems capable of…

Artificial Intelligence · Computer Science 2026-01-15 Zixia Jia , Jiaqi Li , Yipeng Kang , Yuxuan Wang , Tong Wu , Quansen Wang , Xiaobo Wang , Shuyi Zhang , Junzhe Shen , Qing Li , Siyuan Qi , Yitao Liang , Di He , Zilong Zheng , Song-Chun Zhu

Recently, self-supervised learning (SSL) was shown to be vulnerable to patch-based data poisoning backdoor attacks. It was shown that an adversary can poison a small part of the unlabeled data so that when a victim trains an SSL model on…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Ajinkya Tejankar , Maziar Sanjabi , Qifan Wang , Sinong Wang , Hamed Firooz , Hamed Pirsiavash , Liang Tan

Large language models (LLMs) frequently memorize sensitive information during training, posing risks when deploying publicly accessible models. Current machine unlearning methods struggle to selectively remove specific data associations…

Computation and Language · Computer Science 2025-04-18 Saransh Agrawal , Kuan-Hao Huang

Large Language Models (LLMs) have demonstrated significant potential as autonomous software engineering (SWE) agents. Recent work has further explored augmenting these agents with memory mechanisms to support long-horizon reasoning.…

Software Engineering · Computer Science 2026-02-26 Kangning Shen , Jingyuan Zhang , Chenxi Sun , Wencong Zeng , Yang Yue

Persistent external memory enables LLM agents to maintain context across sessions, yet its security properties remain formally uncharacterized. We formalize memory poisoning attacks on retrieval-augmented agents as a Stackelberg game with a…

Cryptography and Security · Computer Science 2026-05-08 Ishrith Gowda

Autonomous AI agents powered by Large Language Models can reason, plan, and execute complex tasks, but their ability to autonomously retrieve information and run code introduces significant security risks. Existing approaches attempt to…

Cryptography and Security · Computer Science 2026-04-09 Hongyi Lu , Nian Liu , Shuai Wang , Fengwei Zhang

Machine learning models have been widely adopted in several fields. However, most recent studies have shown several vulnerabilities from attacks with a potential to jeopardize the integrity of the model, presenting a new window of research…

Cryptography and Security · Computer Science 2022-02-23 Miguel A. Ramirez , Song-Kyoo Kim , Hussam Al Hamadi , Ernesto Damiani , Young-Ji Byon , Tae-Yeon Kim , Chung-Suk Cho , Chan Yeob Yeun