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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

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

Retrieval-Augmented Generation (RAG) has emerged as the dominant architectural pattern to operationalize Large Language Model (LLM) usage in Cyber Threat Intelligence (CTI) systems. However, this design is susceptible to poisoning attacks,…

Cryptography and Security · Computer Science 2025-12-17 Austin Jia , Avaneesh Ramesh , Zain Shamsi , Daniel Zhang , Alex Liu

Retrieval-Augmented Generation (RAG) systems based on Large Language Models (LLMs) have become a core technology for tasks such as question-answering (QA) and content generation. RAG poisoning is an attack method to induce LLMs to generate…

Artificial Intelligence · Computer Science 2026-01-13 Meng Xi , Sihan Lv , Yechen Jin , Guanjie Cheng , Naibo Wang , Ying Li , Jianwei Yin

Retrieval-Augmented Generation (RAG) enhances large language models (LLMs) by integrating external knowledge sources, enabling more accurate and contextually relevant responses tailored to user queries. These systems, however, remain…

Computation and Language · Computer Science 2025-05-26 Huichi Zhou , Kin-Hei Lee , Zhonghao Zhan , Yue Chen , Zhenhao Li , Zhaoyang Wang , Hamed Haddadi , Emine Yilmaz

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

Early research into data poisoning attacks against Large Language Models (LLMs) demonstrated the ease with which backdoors could be injected. More recent LLMs add step-by-step reasoning, expanding the attack surface to include the…

Cryptography and Security · Computer Science 2025-09-09 Hanna Foerster , Ilia Shumailov , Yiren Zhao , Harsh Chaudhari , Jamie Hayes , Robert Mullins , Yarin Gal

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) systems respond to queries by retrieving relevant documents from a knowledge database and applying an LLM to the retrieved documents. We demonstrate that RAG systems that operate on databases with…

Cryptography and Security · Computer Science 2025-03-11 Avital Shafran , Roei Schuster , Vitaly Shmatikov

Retrieval-Augmented Generation (RAG) is an emerging approach in natural language processing that combines large language models (LLMs) with external document retrieval to produce more accurate and grounded responses. While RAG has shown…

Cryptography and Security · Computer Science 2025-09-25 Atousa Arzanipour , Rouzbeh Behnia , Reza Ebrahimi , Kaushik Dutta

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) 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

Retrieval-Augmented Generation (RAG) enhances large language models (LLMs) by incorporating external knowledge, but its openness introduces vulnerabilities that can be exploited by poisoning attacks. Existing poisoning methods for RAG…

Cryptography and Security · Computer Science 2025-05-27 Chunyang Li , Junwei Zhang , Anda Cheng , Zhuo Ma , Xinghua Li , Jianfeng Ma

Retrieval-Augmented Generation (RAG) systems enhance Large Language Models (LLMs) by retrieving relevant documents from external corpora before generating responses. This approach significantly expands LLM capabilities by leveraging vast,…

Cryptography and Security · Computer Science 2025-11-13 Haowei Wang , Rupeng Zhang , Junjie Wang , Mingyang Li , Yuekai Huang , Dandan Wang , Qing Wang

Retrieval-Augmented Generation (RAG) enhances the performance of Large Language Models (LLMs) by incorporating external knowledge. However, LLMs still encounter challenges in effectively utilizing the knowledge from retrieved documents,…

Computation and Language · Computer Science 2025-02-26 Mingyan Wu , Zhenghao Liu , Yukun Yan , Xinze Li , Shi Yu , Zheni Zeng , Yu Gu , Ge Yu

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

Large Language Models (LLMs) have demonstrated remarkable performance across a wide range of applications, e.g., medical question-answering, mathematical sciences, and code generation. However, they also exhibit inherent limitations, such…

Cryptography and Security · Computer Science 2025-06-23 Yang Jiao , Xiaodong Wang , Kai Yang

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

Retrieval augmented generation (RAG) systems provide a method for factually grounding the responses of a Large Language Model (LLM) by providing retrieved evidence, or context, as support. Guided by this context, RAG systems can reduce…

Information Retrieval · Computer Science 2025-09-05 Shakiba Amirshahi , Amin Bigdeli , Charles L. A. Clarke , Amira Ghenai

Retrieval-Augmented Generation (RAG) systems, which integrate Large Language Models (LLMs) with external knowledge sources, are vulnerable to a range of adversarial attack vectors. This paper examines the importance of RAG systems through…

Cryptography and Security · Computer Science 2025-06-03 Chris M. Ward , Josh Harguess