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Recent studies have revealed that federated learning (FL), once considered secure due to clients not sharing their private data with the server, is vulnerable to attacks such as client-side training data distribution inference, where a…

Cryptography and Security · Computer Science 2024-04-05 Yichang Xu , Ming Yin , Minghong Fang , Neil Zhenqiang Gong

Federated Learning (FL) enables multiple clients to collaboratively train a model without sharing their local data. Yet the FL system is vulnerable to well-designed Byzantine attacks, which aim to disrupt the model training process by…

Machine Learning · Computer Science 2024-09-05 Jiahao Xu , Zikai Zhang , Rui Hu

Federated Learning (FL) is a distributed machine learning paradigm where data is distributed among clients who collaboratively train a model in a computation process coordinated by a central server. By assigning a weight to each client…

Machine Learning · Computer Science 2021-05-19 Amit Portnoy , Yoav Tirosh , Danny Hendler

Federated learning (FL) is a promising privacy-preserving distributed machine learning methodology that allows multiple clients (i.e., workers) to collaboratively train statistical models without disclosing private training data. Due to the…

Machine Learning · Computer Science 2021-04-19 Bo Zhao , Peng Sun , Liming Fang , Tao Wang , Keyu Jiang

Federated learning enables training collaborative machine learning models at scale with many participants whilst preserving the privacy of their datasets. Standard federated learning techniques are vulnerable to Byzantine failures, biased…

Machine Learning · Statistics 2019-09-12 Luis Muñoz-González , Kenneth T. Co , Emil C. Lupu

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

Motivated by the ever-increasing concerns on personal data privacy and the rapidly growing data volume at local clients, federated learning (FL) has emerged as a new machine learning setting. An FL system is comprised of a central parameter…

Cryptography and Security · Computer Science 2022-08-04 Xiang Ma , Haijian Sun , Rose Qingyang Hu , Yi Qian

This paper addresses federated learning (FL) in the context of malicious Byzantine attacks and data heterogeneity. We introduce a novel Robust Average Gradient Algorithm (RAGA), which uses the geometric median for aggregation and {allows…

Machine Learning · Computer Science 2025-09-30 Shiyuan Zuo , Xingrun Yan , Rongfei Fan , Han Hu , Hangguan Shan , Tony Q. S. Quek , Puning Zhao

Federated Learning (FL) aims to train a collaborative model while preserving data privacy. However, the distributed nature of this approach still raises privacy and security issues, such as the exposure of sensitive data due to inference…

Machine Learning · Computer Science 2026-02-09 Adda Akram Bendoukha , Aymen Boudguiga , Nesrine Kaaniche , Renaud Sirdey , Didem Demirag , Sébastien Gambs

Federated learning (FL) facilitates distributed training across different IoT and edge devices, safeguarding the privacy of their data. The inherent distributed structure of FL introduces vulnerabilities, especially from adversarial devices…

Cryptography and Security · Computer Science 2023-11-13 Shenghui Li , Edith Ngai , Fanghua Ye , Li Ju , Tianru Zhang , Thiemo Voigt

Federated learning is a novel framework that enables resource-constrained edge devices to jointly learn a model, which solves the problem of data protection and data islands. However, standard federated learning is vulnerable to Byzantine…

Machine Learning · Computer Science 2021-09-07 Kun Zhai , Qiang Ren , Junli Wang , Chungang Yan

Federated Learning (FL) has gained significant attention for its privacy-preserving capabilities, enabling distributed devices to collaboratively train a global model without sharing raw data. However, its distributed nature forces the…

Cryptography and Security · Computer Science 2025-09-03 Chaoyu Zhang , Heng Jin , Shanghao Shi , Hexuan Yu , Sydney Johns , Y. Thomas Hou , Wenjing Lou

Byzantine-robust federated learning aims at mitigating Byzantine failures during the federated training process, where malicious participants may upload arbitrary local updates to the central server to degrade the performance of the global…

Machine Learning · Computer Science 2023-02-15 Shenghui Li , Edith C. -H. Ngai , Thiemo Voigt

The possibility of adversarial (a.k.a., {\em Byzantine}) clients makes federated learning (FL) prone to arbitrary manipulation. The natural approach to robustify FL against adversarial clients is to replace the simple averaging operation at…

Machine Learning · Computer Science 2024-06-11 Youssef Allouah , Sadegh Farhadkhani , Rachid GuerraouI , Nirupam Gupta , Rafael Pinot , Geovani Rizk , Sasha Voitovych

Network traffic prediction plays a crucial role in intelligent network operation. Traditional prediction methods often rely on centralized training, necessitating the transfer of vast amounts of traffic data to a central server. This…

Machine Learning · Computer Science 2025-05-27 Hui Ma , Kai Yang , Yang Jiao

Federated Learning (FL) enables decentralized model training without sharing raw data. However, it remains vulnerable to Byzantine attacks, which can compromise the aggregation of locally updated parameters at the central server.…

Machine Learning · Computer Science 2025-09-30 Shiyuan Zuo , Rongfei Fan , Cheng Zhan , Jie Xu , Puning Zhao , Han Hu

Federated Learning (FL) emerged as a widely studied paradigm for distributed learning. Despite its many advantages, FL remains vulnerable to adversarial attacks, especially under data heterogeneity. We propose a new Byzantine-robust FL…

Machine Learning · Computer Science 2025-09-12 Sena Ergisi , Luis Maßny , Rawad Bitar

Federated Learning (FL) enables clients to collaboratively train a global model using their local datasets while reinforcing data privacy, but it is prone to poisoning attacks. Existing defense mechanisms assume that clients' data are…

Cryptography and Security · Computer Science 2025-09-03 Mehdi Ben Ghali , Gouenou Coatrieux , Reda Bellafqira

Federated learning has exhibited vulnerabilities to Byzantine attacks, where the Byzantine attackers can send arbitrary gradients to a central server to destroy the convergence and performance of the global model. A wealth of robust…

Machine Learning · Computer Science 2023-06-06 Yuchen Liu , Chen Chen , Lingjuan Lyu , Fangzhao Wu , Sai Wu , Gang Chen

Given sufficient data from multiple edge devices, federated learning (FL) enables training a shared model without transmitting private data to the central server. However, FL is generally vulnerable to Byzantine attacks from compromised…

Machine Learning · Computer Science 2025-09-18 Youngjoon Lee , Jinu Gong , Joonhyuk Kang