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Retrieval-augmented generation (RAG) has emerged as a popular solution to mitigate the hallucination issues of large language models. However, existing studies on RAG seldom address the issue of predictive uncertainty, i.e., how likely it…

Computation and Language · Computer Science 2024-12-05 Lu Chen , Ruqing Zhang , Jiafeng Guo , Yixing Fan , Xueqi Cheng

Retrieval-Augmented Generation (RAG) systems, widely used to improve the factual grounding of large language models (LLMs), are increasingly vulnerable to poisoning attacks, where adversaries inject manipulated content into the retriever's…

Information Retrieval · Computer Science 2025-06-04 Liuji Chen , Xiaofang Yang , Yuanzhuo Lu , Jinghao Zhang , Xin Sun , Qiang Liu , Shu Wu , Jing Dong , Liang 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

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) 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

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

Retrieval Augmented Generation (RAG) expands the capabilities of modern large language models (LLMs), by anchoring, adapting, and personalizing their responses to the most relevant knowledge sources. It is particularly useful in chatbot…

This study presents Poison-RAG, a framework for adversarial data poisoning attacks targeting retrieval-augmented generation (RAG)-based recommender systems. Poison-RAG manipulates item metadata, such as tags and descriptions, to influence…

Information Retrieval · Computer Science 2025-01-22 Fatemeh Nazary , Yashar Deldjoo , Tommaso di Noia

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

In Large Language Models, Retrieval-Augmented Generation (RAG) systems can significantly enhance the performance of large language models by integrating external knowledge. However, RAG also introduces new security risks. Existing research…

Machine Learning · Computer Science 2025-06-16 Linlin Wang , Tianqing Zhu , Laiqiao Qin , Longxiang Gao , Wanlei Zhou

Retrieval Augmented Generation (RAG) is a technique commonly used to equip models with out of distribution knowledge. This process involves collecting, indexing, retrieving, and providing information to an LLM for generating responses.…

Cryptography and Security · Computer Science 2024-08-13 Gianluca De Stefano , Lea Schönherr , Giancarlo Pellegrino

Retrieval-augmented generation (RAG) systems put more and more emphasis on grounding their responses in user-generated content found on the Web, amplifying both their usefulness and their attack surface. Most notably, indirect prompt…

Cryptography and Security · Computer Science 2026-01-22 Haoze Guo , Ziqi Wei

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

Retrieval-Augmented Generation RAG systems enhance large language models by grounding responses in external knowledge bases, but conventional RAG architectures operate with static corpora that cannot evolve from user interactions. We…

Artificial Intelligence · Computer Science 2025-12-30 Teja Chinthala

Large Language Models (LLMs) have demonstrated remarkable capabilities in generating coherent text but remain limited by the static nature of their training data. Retrieval Augmented Generation (RAG) addresses this issue by combining LLMs…

Cryptography and Security · Computer Science 2024-10-21 Cody Clop , Yannick Teglia

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

Introducing reasoning models into Retrieval-Augmented Generation (RAG) systems enhances task performance through step-by-step reasoning, logical consistency, and multi-step self-verification. However, recent studies have shown that…

Cryptography and Security · Computer Science 2026-01-21 Xiaolei Zhang , Xiaojun Jia , Liquan Chen , Songze Li

Retrieval-Augmented Generation (RAG) significantly mitigates the hallucinations and domain knowledge deficiency in large language models by incorporating external knowledge bases. However, the multi-module architecture of RAG introduces…

Cryptography and Security · Computer Science 2026-03-24 Yanming Mu , Hao Hu , Feiyang Li , Qiao Yuan , Jiang Wu , Zichuan Liu , Pengcheng Liu , Mei Wang , Hongwei Zhou , Yuling Liu

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