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Multi-modal retrieval-augmented generation (MRAG) systems retrieve visual evidence from large image corpora to ground the responses of large multi-modal models, yet the retrieved images frequently contain human faces whose identities…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Zehua Cheng , Wei Dai , Jiahao Sun

As large language models (LLMs) become increasingly adopted on edge devices, Retrieval-Augmented Generation (RAG) is gaining prominence as a solution to address factual deficiencies and hallucinations by integrating external knowledge.…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-05-02 Chenhao Xu , Longxiang Gao , Yuan Miao , Xi Zheng

Retrieval-Augmented Generation (RAG) enables large language models to use external knowledge, but outsourcing the RAG service raises privacy concerns for both data owners and users. Privacy-preserving RAG systems address these concerns by…

Cryptography and Security · Computer Science 2026-05-29 Yulong Ming , Mingyue Wang , Jijia Yang , Jie Xu , Zihan Wu , Cong Wang , Xiaohua Jia

Retrieval-Augmented Generation (RAG) is widely used to augment large language models with external knowledge retrieval to improve reliability and generalization. However, recent studies have shown that RAG systems remain vulnerable to data…

Information Retrieval · Computer Science 2026-05-20 Xingyu Lyu , Jianfeng He , Ning Wang , Yidan Hu , Tao Li , Danjue Chen , Shixiong Li , Yimin Chen

Large Language Models (LLMs) remain vulnerable to jailbreak attacks, which attempt to elicit harmful responses from LLMs. The evolving nature and diversity of these attacks pose many challenges for defense systems, including (1) adaptation…

Cryptography and Security · Computer Science 2025-11-04 Guangyu Yang , Jinghong Chen , Jingbiao Mei , Weizhe Lin , Bill Byrne

While the flexible capabilities of large language models (LLMs) allow them to answer a range of queries based on existing learned knowledge, information retrieval to augment generation is an important tool to allow LLMs to answer questions…

Information Retrieval · Computer Science 2023-11-23 Guy Zyskind , Tobin South , Alex Pentland

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

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

Multimodal Retrieval-Augmented Generation (MRAG) systems enhance LMMs by integrating external multimodal databases, but introduce unexplored privacy vulnerabilities. While text-based RAG privacy risks have been studied, multimodal data…

Cryptography and Security · Computer Science 2025-05-21 Jiankun Zhang , Shenglai Zeng , Jie Ren , Tianqi Zheng , Hui Liu , Xianfeng Tang , Hui Liu , Yi Chang

Retrieval-Augmented Generation (RAG) is an advanced technique designed to address the challenges of Artificial Intelligence-Generated Content (AIGC). By integrating context retrieval into content generation, RAG provides reliable and…

Retrieval-Augmented Generation (RAG) has emerged as a powerful paradigm to enhance large language models (LLMs) by conditioning generation on external evidence retrieved at inference time. While RAG addresses critical limitations of…

Information Retrieval · Computer Science 2025-06-03 Chaitanya Sharma

Retrieval-Augmented Generation (RAG) has become a foundational component of modern AI systems, yet it introduces significant privacy risks by exposing user queries to service providers. To address this, we introduce PIR-RAG, a practical…

Information Retrieval · Computer Science 2025-09-29 Baiqiang Wang , Qian Lou , Mengxin Zheng , Dongfang Zhao

Generative Adversarial Network (GAN) and its variants serve as a perfect representation of the data generation model, providing researchers with a large amount of high-quality generated data. They illustrate a promising direction for…

Machine Learning · Computer Science 2020-04-21 Yi Liu , Jialiang Peng , James J. Q Yu , Yi Wu

Retrieval-augmented generation (RAG) has rapidly emerged as a transformative approach for integrating large language models into clinical and biomedical workflows. However, privacy risks, such as protected health information (PHI) exposure,…

Cryptography and Security · Computer Science 2025-11-18 Shaowei Guan , Hin Chi Kwok , Ngai Fong Law , Gregor Stiglic , Harry Qin , Vivian Hui

Retrieval Augmented Generation (RAG) has emerged as the de facto industry standard for user-facing NLP applications, offering the ability to integrate data without re-training or fine-tuning Large Language Models (LLMs). This capability…

Cryptography and Security · Computer Science 2026-01-13 Lukas Ammann , Sara Ott , Christoph R. Landolt , Marco P. Lehmann

Retrieval-augmented generation (RAG) enhances the outputs of language models by integrating relevant information retrieved from external knowledge sources. However, when the retrieval process involves private data, RAG systems may face…

Cryptography and Security · Computer Science 2025-02-21 Shenglai Zeng , Jiankun Zhang , Pengfei He , Jie Ren , Tianqi Zheng , Hanqing Lu , Han Xu , Hui Liu , Yue Xing , Jiliang Tang

Multi-tenant retrieval-augmented generation (RAG) services advertise per-account differential privacy as the operative leakage boundary: each account's queries are guaranteed to satisfy $(\varepsilon_{\text{acc}}, \delta_{\text{acc}})$-DP…

Cryptography and Security · Computer Science 2026-05-20 Florian A. D. Burnat , Brittany I. Davidson

Recent advances in large language models (LLMs) have made a profound impact on our society and also raised new security concerns. Particularly, due to the remarkable inference ability of LLMs, the privacy violation attack (PVA), revealed by…

Cryptography and Security · Computer Science 2025-06-26 Wanli Peng , Xin Chen , Hang Fu , XinYu He , Xue Yiming , Juan Wen

We present a comprehensive framework for enhancing Retrieval-Augmented Generation (RAG) systems through dynamic retrieval strategies and reinforcement fine-tuning. This approach significantly improves large language models on…

Machine Learning · Computer Science 2025-05-21 Sakhinana Sagar Srinivas , Akash Das , Shivam Gupta , Venkataramana Runkana

Accurately learning from user data while ensuring quantifiable privacy guarantees provides an opportunity to build better Machine Learning (ML) models while maintaining user trust. Recent literature has demonstrated the applicability of a…

Machine Learning · Computer Science 2020-12-11 Oluwaseyi Feyisetan , Abhinav Aggarwal , Zekun Xu , Nathanael Teissier