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Federated recommender systems (FedRecs) have been widely explored recently due to their ability to protect user data privacy. In FedRecs, a central server collaboratively learns recommendation models by sharing model public parameters with…

Information Retrieval · Computer Science 2023-05-18 Wei Yuan , Shilong Yuan , Chaoqun Yang , Quoc Viet Hung Nguyen , Hongzhi Yin

Federated recommendation (FedRec) can train personalized recommenders without collecting user data, but the decentralized nature makes it susceptible to poisoning attacks. Most previous studies focus on the targeted attack to promote…

Information Retrieval · Computer Science 2022-12-13 Yang Yu , Qi Liu , Likang Wu , Runlong Yu , Sanshi Lei Yu , Zaixi Zhang

To make room for privacy and efficiency, the deployment of many recommender systems is experiencing a shift from central servers to personal devices, where the federated recommender systems (FedRecs) and decentralized collaborative…

Cryptography and Security · Computer Science 2024-04-02 Ruiqi Zheng , Liang Qu , Tong Chen , Kai Zheng , Yuhui Shi , Hongzhi Yin

Federated recommender systems (FedRec) have emerged as a promising approach to provide personalized recommendations while protecting user privacy. However, recent studies have shown their vulnerability to poisoning attacks, where malicious…

Cryptography and Security · Computer Science 2026-02-02 Bo Yan , Yurong Hao , Dingqi Liu , Huabin Sun , Pengpeng Qiao , Wei Yang Bryan Lim , Yang Cao , Chuan Shi

Federated Recommendation (FR) has received considerable popularity and attention in the past few years. In FR, for each user, its feature vector and interaction data are kept locally on its own client thus are private to others. Without the…

Cryptography and Security · Computer Science 2025-11-11 Dazhong Rong , Shuai Ye , Ruoyan Zhao , Hon Ning Yuen , Jianhai Chen , Qinming He

Federated learning (FL) is a feasible technique to learn personalized recommendation models from decentralized user data. Unfortunately, federated recommender systems are vulnerable to poisoning attacks by malicious clients. Existing…

Information Retrieval · Computer Science 2022-02-11 Chuhan Wu , Fangzhao Wu , Tao Qi , Yongfeng Huang , Xing Xie

Recommender systems can be privacy-sensitive. To protect users' private historical interactions, federated learning has been proposed in distributed learning for user representations. Using federated recommender (FedRec) systems, users can…

Information Retrieval · Computer Science 2023-12-29 Qi Hu , Yangqiu Song

Federated recommendation is a prominent use case within federated learning, yet it remains susceptible to various attacks, from user to server-side vulnerabilities. Poisoning attacks are particularly notable among user-side attacks, as…

Cryptography and Security · Computer Science 2024-02-20 Ming Yin , Yichang Xu , Minghong Fang , Neil Zhenqiang Gong

The marriage of federated learning and recommender system (FedRec) has been widely used to address the growing data privacy concerns in personalized recommendation services. In FedRecs, users' attribute information and behavior data (i.e.,…

Information Retrieval · Computer Science 2023-01-31 Wei Yuan , Chaoqun Yang , Quoc Viet Hung Nguyen , Lizhen Cui , Tieke He , Hongzhi Yin

Federated Recommender Systems (FedRecs) have garnered increasing attention recently, thanks to their privacy-preserving benefits. However, the decentralized and open characteristics of current FedRecs present two dilemmas. First, the…

Information Retrieval · Computer Science 2024-04-01 Wei Yuan , Chaoqun Yang , Liang Qu , Guanhua Ye , Quoc Viet Hung Nguyen , Hongzhi Yin

Federated recommendation (FedRec) preserves user privacy by enabling decentralized training of personalized models, but this architecture is inherently vulnerable to adversarial attacks. Significant research has been conducted on targeted…

Information Retrieval · Computer Science 2025-07-03 Qitao Qin , Yucong Luo , Zhibo Chu

Various attack methods against recommender systems have been proposed in the past years, and the security issues of recommender systems have drawn considerable attention. Traditional attacks attempt to make target items recommended to as…

Information Retrieval · Computer Science 2025-11-11 Dazhong Rong , Qinming He , Jianhai Chen

Recommender systems are widely used in industry to improve user experience. Despite great success, they have recently been criticized for collecting private user data. Federated Learning (FL) is a new paradigm for learning on distributed…

Machine Learning · Computer Science 2022-10-26 Junyi Li , Heng Huang

News recommendation is critical for personalized news distribution. Federated news recommendation enables collaborative model learning from many clients without sharing their raw data. It is promising for privacy-preserving news…

Information Retrieval · Computer Science 2023-06-09 Jingwei Yi , Fangzhao Wu , Bin Zhu , Jing Yao , Zhulin Tao , Guangzhong Sun , Xing Xie

Due to the growing privacy concerns, decentralization emerges rapidly in personalized services, especially recommendation. Also, recent studies have shown that centralized models are vulnerable to poisoning attacks, compromising their…

Information Retrieval · Computer Science 2021-10-22 Shijie Zhang , Hongzhi Yin , Tong Chen , Zi Huang , Quoc Viet Hung Nguyen , Lizhen Cui

Preserving privacy and reducing communication costs for edge users pose significant challenges in recommendation systems. Although federated learning has proven effective in protecting privacy by avoiding data exchange between clients and…

Machine Learning · Computer Science 2023-11-01 Lin Wang , Zhichao Wang , Xi Leng , Xiaoying Tang

Federated recommender systems (FedRecs) have emerged as a popular research direction for protecting users' privacy in on-device recommendations. In FedRecs, users keep their data locally and only contribute their local collaborative…

Information Retrieval · Computer Science 2024-09-13 Chaoqun Yang , Wei Yuan , Liang Qu , Thanh Tam Nguyen

Extending recommender systems to federated learning (FL) frameworks to protect the privacy of users or platforms while making recommendations has recently gained widespread attention in academia. This is due to the natural coupling of…

Information Retrieval · Computer Science 2025-08-28 Yunqi Mi , Jiakui Shen , Guoshuai Zhao , Jialie Shen , Xueming Qian

Recommender systems have become an integral part of online services to help users locate specific information in a sea of data. However, existing studies show that some recommender systems are vulnerable to poisoning attacks, particularly…

Cryptography and Security · Computer Science 2024-04-24 Thanh Toan Nguyen , Quoc Viet Hung Nguyen , Thanh Tam Nguyen , Thanh Trung Huynh , Thanh Thi Nguyen , Matthias Weidlich , Hongzhi Yin

Federated recommendation (FedRec) preserves user privacy by enabling decentralized training of personalized models, but this architecture is inherently vulnerable to adversarial attacks. Significant research has been conducted on targeted…

Cryptography and Security · Computer Science 2024-12-31 Qitao Qin , Yucong Luo , Mingyue Cheng , Qingyang Mao , Chenyi Lei
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