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Although Retrieval-Augmented Generation (RAG) systems have been widely applied, the privacy and security risks they face, such as data leakage and data poisoning, have not been systematically addressed yet. Existing defense strategies…

Cryptography and Security · Computer Science 2025-08-05 Pengcheng Zhou , Yinglun Feng , Zhongliang Yang

Retrieval-augmented generation (RAG) systems enhance large language models (LLMs) by integrating external knowledge bases, but this advancement introduces significant privacy risks. Existing privacy attacks on RAG systems can trigger data…

Cryptography and Security · Computer Science 2025-11-25 Yufei Chen , Yao Wang , Haibin Zhang , Tao Gu

Retrieval-Augmented Generation (RAG) improves pre-trained models by incorporating external knowledge at test time to enable customized adaptation. We study the risk of datastore leakage in Retrieval-In-Context RAG Language Models (LMs). We…

Computation and Language · Computer Science 2024-10-08 Zhenting Qi , Hanlin Zhang , Eric Xing , Sham Kakade , Himabindu Lakkaraju

Retrieval-Augmented Generation (RAG) has been empirically shown to enhance the performance of large language models (LLMs) in knowledge-intensive domains such as healthcare, finance, and legal contexts. Given a query, RAG retrieves relevant…

Cryptography and Security · Computer Science 2025-06-02 Xun Xian , Ganghua Wang , Xuan Bi , Jayanth Srinivasa , Ashish Kundu , Charles Fleming , Mingyi Hong , Jie Ding

Stealing attacks pose a persistent threat to the intellectual property of deployed machine-learning systems. Retrieval-augmented generation (RAG) intensifies this risk by extending the attack surface beyond model weights to knowledge base…

Cryptography and Security · Computer Science 2026-02-06 Mengyu Yao , Ziqi Zhang , Ning Luo , Shaofei Li , Yifeng Cai , Xiangqun Chen , Yao Guo , Ding Li

Retrieval-Augmented Generation (RAG) has emerged as a promising paradigm to enhance large language models (LLMs) with external knowledge, reducing hallucinations and compensating for outdated information. However, recent studies have…

Information Retrieval · Computer Science 2026-01-01 Pankayaraj Pathmanathan , Michael-Andrei Panaitescu-Liess , Cho-Yu Jason Chiang , Furong Huang

Retrieval-Augmented Generation (RAG) enables large language models (LLMs) to access broader knowledge sources, yet factual inconsistencies persist due to noise in retrieved documents-even with advanced retrieval methods. We demonstrate that…

Computation and Language · Computer Science 2025-06-04 Yongjian Li , HaoCheng Chu , Yukun Yan , Zhenghao Liu , Shi Yu , Zheni Zeng , Ruobing Wang , Sen Song , Zhiyuan Liu , Maosong Sun

Retrieval-Augmented Generation (RAG) expands the knowledge boundary of large language models (LLMs) by integrating external knowledge bases, whose construction is often time-consuming and laborious. If an adversary extracts the knowledge…

Cryptography and Security · Computer Science 2025-08-11 Changyue Jiang , Xudong Pan , Geng Hong , Chenfu Bao , Yang Chen , Min Yang

Retrieval-Augmented Code Generation (RACG) is increasingly adopted to enhance Large Language Models for software development, yet its security implications remain dangerously underexplored. This paper conducts the first systematic…

Cryptography and Security · Computer Science 2025-12-29 Tian Li , Bo Lin , Shangwen Wang , Yusong Tan

Retrieval-augmented generation (RAG) systems are widely deployed in real-world applications in diverse domains such as finance, healthcare, and cybersecurity. However, many studies showed that they are vulnerable to knowledge corruption…

Cryptography and Security · Computer Science 2025-08-27 Runpeng Geng , Yanting Wang , Ying Chen , Jinyuan Jia

While large language models (LLMs) have achieved remarkable success in providing trustworthy responses for knowledge-intensive tasks, they still face critical limitations such as hallucinations and outdated knowledge. To address these…

Computation and Language · Computer Science 2025-08-06 Zizhong Li , Haopeng Zhang , Jiawei Zhang

Retrieval-augmented generation (RAG) systems are increasingly deployed in sensitive domains such as healthcare and law, where they rely on private, domain-specific knowledge. This capability introduces significant security risks, including…

Cryptography and Security · Computer Science 2026-04-24 Pranav Pallerla , Wilson Naik Bhukya , Bharath Vemula , Charan Ramtej Kodi

Large language models (LLMs) are reshaping numerous facets of our daily lives, leading widespread adoption as web-based services. Despite their versatility, LLMs face notable challenges, such as generating hallucinated content and lacking…

Cryptography and Security · Computer Science 2025-11-04 Minseok Kim , Hankook Lee , Hyungjoon Koo

Retrieval-Augmented Generative (RAG) models enhance Large Language Models (LLMs) by integrating external knowledge bases, improving their performance in applications like fact-checking and information searching. In this paper, we…

Cryptography and Security · Computer Science 2024-07-01 Zhen Tan , Chengshuai Zhao , Raha Moraffah , Yifan Li , Song Wang , Jundong Li , Tianlong Chen , Huan Liu

With the growing adoption of retrieval-augmented generation (RAG) systems, various attack methods have been proposed to degrade their performance. However, most existing approaches rely on unrealistic assumptions in which external attackers…

Cryptography and Security · Computer Science 2025-10-31 Chanwoo Choi , Jinsoo Kim , Sukmin Cho , Soyeong Jeong , Buru Chang

Security applications are increasingly relying on large language models (LLMs) for cyber threat detection; however, their opaque reasoning often limits trust, particularly in decisions that require domain-specific cybersecurity knowledge.…

Cryptography and Security · Computer Science 2025-11-03 Arnabh Borah , Md Tanvirul Alam , Nidhi Rastogi

Large language models (LLMs) have transformed natural language processing (NLP), enabling applications from content generation to decision support. Retrieval-Augmented Generation (RAG) improves LLMs by incorporating external knowledge but…

Cryptography and Security · Computer Science 2025-11-11 Zirui Cheng , Jikai Sun , Anjun Gao , Yueyang Quan , Zhuqing Liu , Xiaohua Hu , Minghong Fang

Large language models (LLMs) have achieved remarkable success due to their exceptional generative capabilities. Despite their success, they also have inherent limitations such as a lack of up-to-date knowledge and hallucination.…

Cryptography and Security · Computer Science 2024-08-14 Wei Zou , Runpeng Geng , Binghui Wang , Jinyuan Jia

Retrieval-augmented generation (RAG) systems are vulnerable to attacks that inject poisoned passages into the retrieved context, even at low corruption rates. We show that existing attacks are not designed to be stealthy, allowing reliable…

Cryptography and Security · Computer Science 2026-05-25 Sarthak Choudhary , Nils Palumbo , Ashish Hooda , Krishnamurthy Dj Dvijotham , Somesh Jha

Retrieval-Augmented Generation (RAG) significantly enhances Large Language Models (LLMs), but simultaneously exposes a critical vulnerability to knowledge poisoning attacks. Existing attack methods like PoisonedRAG remain detectable due to…

Cryptography and Security · Computer Science 2026-04-10 Ziye Wang , Guanyu Wang , Kailong Wang