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Large Language Models (LLMs) enhanced with Retrieval-Augmented Generation (RAG) have shown improved performance in generating accurate responses. However, the dependence on external knowledge bases introduces potential security…

Cryptography and Security · Computer Science 2026-04-10 Zhiyuan Chang , Mingyang Li , Xiaojun Jia , Junjie Wang , Yuekai Huang , Ziyou Jiang , Yang Liu , Qing Wang

Retrieval-augmented generation (RAG) is a widely adopted paradigm for enhancing LLMs in medical applications by incorporating expert multimodal knowledge during generation. However, the underlying retrieval databases may naturally contain,…

Cryptography and Security · Computer Science 2026-05-12 Peiru Yang , Haoran Zheng , Tong Ju , Shiting Wang , Wanchun Ni , Jiajun Liu , Shangguang Wang , Yongfeng Huang , Tao Qi

Large language models (LLMs) have demonstrated impressive natural language processing abilities but face challenges such as hallucination and outdated knowledge. Retrieval-Augmented Generation (RAG) has emerged as a state-of-the-art…

Cryptography and Security · Computer Science 2026-01-09 Baolei Zhang , Yuxi Chen , Zhuqing Liu , Lihai Nie , Tong Li , Zheli Liu , Minghong Fang

Retrieval-Augmented Generation (RAG) systems have emerged as a promising solution to mitigate LLM hallucinations and enhance their performance in knowledge-intensive domains. However, these systems are vulnerable to adversarial poisoning…

Information Retrieval · Computer Science 2025-07-29 Jinyan Su , Jin Peng Zhou , Zhengxin Zhang , Preslav Nakov , Claire Cardie

Retrieval-augmented generation (RAG) enhances large language model (LLM) reasoning by retrieving external documents, but also opens up new attack surfaces. We study knowledge-base poisoning attacks in RAG, where an attacker injects…

Information Retrieval · Computer Science 2026-04-15 Hongru Song , Yu-An Liu , Ruqing Zhang , Jiafeng Guo , Maarten de Rijke , Yixing Fan , Xueqi Cheng

Retrieval-Augmented Generation (RAG) enhances large language models (LLMs) by retrieving external data to mitigate hallucinations and outdated knowledge issues. Benefiting from the strong ability in facilitating diverse data sources and…

Cryptography and Security · Computer Science 2025-07-15 Tianzhe Zhao , Jiaoyan Chen , Yanchi Ru , Haiping Zhu , Nan Hu , Jun Liu , Qika Lin

Retrieval-Augmented Generation (RAG) has emerged as a powerful approach to boost the capabilities of large language models (LLMs) by incorporating external, up-to-date knowledge sources. However, this introduces a potential vulnerability to…

Machine Learning · Computer Science 2026-03-30 Kennedy Edemacu , Vinay M. Shashidhar , Micheal Tuape , Dan Abudu , Beakcheol Jang , Jong Wook Kim

Retrieval-Augmented Generation (RAG) enriches the input to LLMs by retrieving information from the relevant knowledge database, enabling them to produce responses that are more accurate and contextually appropriate. It is worth noting that…

Cryptography and Security · Computer Science 2025-09-01 Xue Tan , Hao Luan , Mingyu Luo , Xiaoyan Sun , Ping Chen , Jun Dai

Retrieval-augmented generation (RAG) systems can effectively mitigate the hallucination problem of large language models (LLMs),but they also possess inherent vulnerabilities. Identifying these weaknesses before the large-scale real-world…

Information Retrieval · Computer Science 2025-05-23 Hongru Song , Yu-an Liu , Ruqing Zhang , Jiafeng Guo , Yixing Fan

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

Large language models (LLMs) have achieved remarkable success in various domains, primarily due to their strong capabilities in reasoning and generating human-like text. Despite their impressive performance, LLMs are susceptible to…

Cryptography and Security · Computer Science 2025-05-13 Yangguang Shao , Xinjie Lin , Haozheng Luo , Chengshang Hou , Gang Xiong , Jiahao Yu , Junzheng Shi

Multimodal retrieval-augmented generation (RAG) enhances the visual reasoning capability of vision-language models (VLMs) by dynamically accessing information from external knowledge bases. In this work, we introduce \textit{Poisoned-MRAG},…

Cryptography and Security · Computer Science 2025-03-17 Yinuo Liu , Zenghui Yuan , Guiyao Tie , Jiawen Shi , Pan Zhou , Lichao Sun , Neil Zhenqiang Gong

We present a systematic study of provider-side data poisoning in retrieval-augmented recommender systems (RAG-based). By modifying only a small fraction of tokens within item descriptions -- for instance, adding emotional keywords or…

Information Retrieval · Computer Science 2025-05-09 Fatemeh Nazary , Yashar Deldjoo , Tommaso Di Noia , Eugenio Di Sciascio

Large language models (LLMs) integrated with retrieval-augmented generation (RAG) systems improve accuracy by leveraging external knowledge sources. However, recent research has revealed RAG's susceptibility to poisoning attacks, where the…

Cryptography and Security · Computer Science 2025-10-21 Baolei Zhang , Haoran Xin , Minghong Fang , Zhuqing Liu , Biao Yi , Tong Li , Zheli Liu

Presently, with the assistance of advanced LLM application development frameworks, more and more LLM-powered applications can effortlessly augment the LLMs' knowledge with external content using the retrieval augmented generation (RAG)…

Cryptography and Security · Computer Science 2024-04-29 Quan Zhang , Binqi Zeng , Chijin Zhou , Gwihwan Go , Heyuan Shi , Yu Jiang

Despite significant advancements, large language models (LLMs) still struggle with providing accurate answers when lacking domain-specific or up-to-date knowledge. Retrieval-Augmented Generation (RAG) addresses this limitation by…

Cryptography and Security · Computer Science 2025-04-01 Yuefeng Peng , Junda Wang , Hong Yu , Amir Houmansadr

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

Large Language Models (LLMs) have demonstrated remarkable performance across a wide range of applications. However, their practical deployment is often hindered by issues such as outdated knowledge and the tendency to generate…

Cryptography and Security · Computer Science 2026-03-27 Haozhen Wang , Haoyue Liu , Jionghao Zhu , Zhichao Wang , Yongxin Guo , Xiaoying Tang

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

Retrieval-Augmented Generation (RAG) systems enhance response credibility and traceability by displaying reference contexts, but this transparency simultaneously introduces a novel black-box attack vector. Existing document poisoning…

Computation and Language · Computer Science 2026-01-27 Runqi Sui
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