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Federated learning enables learning from decentralized data sources without compromising privacy, which makes it a crucial technique. However, it is vulnerable to model poisoning attacks, where malicious clients interfere with the training…

Cryptography and Security · Computer Science 2023-07-19 Sungwon Park , Sungwon Han , Fangzhao Wu , Sundong Kim , Bin Zhu , Xing Xie , Meeyoung Cha

Federated learning (FL) is vulnerable to model poisoning attacks, in which malicious clients corrupt the global model via sending manipulated model updates to the server. Existing defenses mainly rely on Byzantine-robust FL methods, which…

Cryptography and Security · Computer Science 2022-10-25 Zaixi Zhang , Xiaoyu Cao , Jinyuan Jia , Neil Zhenqiang Gong

Federated learning (FL) is vulnerable to poisoning attacks, where malicious clients manipulate their updates to affect the global model. Although various methods exist for detecting those clients in FL, identifying malicious clients…

Cryptography and Security · Computer Science 2024-01-22 Yu Jiang , Jiyuan Shen , Ziyao Liu , Chee Wei Tan , Kwok-Yan Lam

Federated Learning (FL) can be vulnerable to attacks, such as model poisoning, where adversaries send malicious local weights to compromise the global model. Federated Unlearning (FU) is emerging as a solution to address such…

Machine Learning · Computer Science 2025-08-20 Nicolò Romandini , Cristian Borcea , Rebecca Montanari , Luca Foschini

Federated learning allows multiple clients to collaboratively train a global model with the assistance of a server. However, its distributed nature makes it susceptible to poisoning attacks, where malicious clients can compromise the global…

Cryptography and Security · Computer Science 2025-01-30 Wenbin Wang , Qiwen Ma , Zifan Zhang , Yuchen Liu , Zhuqing Liu , Minghong Fang

Federated learning is a distributed framework designed to address privacy concerns. However, it introduces new attack surfaces, which are especially prone when data is non-Independently and Identically Distributed. Existing approaches fail…

Cryptography and Security · Computer Science 2025-05-27 Hyejun Jeong , Hamin Son , Seohu Lee , Jayun Hyun , Tai-Myoung Chung

Poisoning attacks compromise the training phase of federated learning (FL) such that the learned global model misclassifies attacker-chosen inputs called target inputs. Existing defenses mainly focus on protecting the training phase of FL…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Yuqi Jia , Minghong Fang , Hongbin Liu , Jinghuai Zhang , Neil Zhenqiang Gong

Federated learning (FL) is vulnerable to poisoning attacks, where malicious clients upload manipulated updates to degrade the performance of the global model. Although detection methods can identify and remove malicious clients, the model…

Machine Learning · Computer Science 2026-05-05 Wenwei Zhao , Xiaowen Li , Yao Liu , Zhuo Lu

Decentralized learning is vulnerable to poison attacks, where malicious clients manipulate local updates to degrade global model performance. Existing defenses mainly detect and filter malicious models, aiming to prevent a limited number of…

Cryptography and Security · Computer Science 2025-06-19 Xiangman Li , Xiaodong Wu , Jianbing Ni , Mohamed Mahmoud , Maazen Alsabaan

Federated learning systems are vulnerable to attacks from malicious clients. As the central server in the system cannot govern the behaviors of the clients, a rogue client may initiate an attack by sending malicious model updates to the…

Machine Learning · Computer Science 2020-02-04 Suyi Li , Yong Cheng , Wei Wang , Yang Liu , Tianjian Chen

Federated learning has recently emerged as a decentralized approach to learn a high-performance model without access to user data. Despite its effectiveness, federated learning gives malicious users opportunities to manipulate the model by…

Machine Learning · Computer Science 2024-02-28 Tianhang Zheng , Baochun Li

Existing model poisoning attacks to federated learning assume that an attacker has access to a large fraction of compromised genuine clients. However, such assumption is not realistic in production federated learning systems that involve…

Cryptography and Security · Computer Science 2022-05-09 Xiaoyu Cao , Neil Zhenqiang Gong

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

Model poisoning attacks are critical security threats to Federated Learning (FL). Existing model poisoning attacks suffer from two key limitations: 1) they achieve suboptimal effectiveness when defenses are deployed, and/or 2) they require…

Cryptography and Security · Computer Science 2025-08-14 Yueqi Xie , Minghong Fang , Neil Zhenqiang Gong

Due to its distributed nature, federated learning is vulnerable to poisoning attacks, in which malicious clients poison the training process via manipulating their local training data and/or local model updates sent to the cloud server,…

Cryptography and Security · Computer Science 2022-10-05 Xiaoyu Cao , Zaixi Zhang , Jinyuan Jia , Neil Zhenqiang Gong

Federated Learning systems are increasingly subjected to a multitude of model poisoning attacks from clients. Among these, edge-case attacks that target a small fraction of the input space are nearly impossible to detect using existing…

Machine Learning · Computer Science 2024-08-15 Kiran Purohit , Soumi Das , Sourangshu Bhattacharya , Santu Rana

Federated learning is known to be vulnerable to both security and privacy issues. Existing research has focused either on preventing poisoning attacks from users or on concealing the local model updates from the server, but not both.…

Machine Learning · Computer Science 2024-06-05 Truc Nguyen , My T. Thai

Federated learning (FL) is an emerging paradigm for distributed training of large-scale deep neural networks in which participants' data remains on their own devices with only model updates being shared with a central server. However, the…

Machine Learning · Computer Science 2020-08-13 Vale Tolpegin , Stacey Truex , Mehmet Emre Gursoy , Ling Liu

Federated learning (FL) is a popular distributed learning framework that trains a global model through iterative communications between a central server and edge devices. Recent works have demonstrated that FL is vulnerable to model…

Machine Learning · Computer Science 2021-10-27 Jingwei Sun , Ang Li , Louis DiValentin , Amin Hassanzadeh , Yiran Chen , Hai Li

Federated Learning (FL) is a privacy-preserving distributed machine learning technique that enables individual clients (e.g., user participants, edge devices, or organizations) to train a model on their local data in a secure environment…

Cryptography and Security · Computer Science 2024-02-26 Waris Gill , Ali Anwar , Muhammad Ali Gulzar
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