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Federated learning combines local updates from clients to produce a global model, which is susceptible to poisoning attacks. Most previous defense strategies relied on vectors derived from projections of local updates on a Euclidean space;…

Machine Learning · Computer Science 2024-04-19 Sungwon Han , Hyeonho Song , Sungwon Park , Meeyoung Cha

Federated learning (FL), as a type of collaborative machine learning framework, is capable of preserving private data from mobile terminals (MTs) while training the data into useful models. Nevertheless, from a viewpoint of information…

Machine Learning · Computer Science 2021-02-01 Kang Wei , Jun Li , Ming Ding , Chuan Ma , Hang Su , Bo Zhang , H. Vincent Poor

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 collaborative learning paradigm allowing multiple clients to jointly train a model without sharing their training data. However, FL is susceptible to poisoning attacks, in which the adversary injects manipulated…

Cryptography and Security · Computer Science 2024-01-17 Hossein Fereidooni , Alessandro Pegoraro , Phillip Rieger , Alexandra Dmitrienko , Ahmad-Reza Sadeghi

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), a privacy-preserving machine learning framework, faces significant data-related challenges. For example, the lack of suitable public datasets leads to ineffective information exchange, especially in heterogeneous…

Cryptography and Security · Computer Science 2025-04-22 Xi Li , Chen Wu , Jiaqi Wang

Federated learning (FL) provides a high efficient decentralized machine learning framework, where the training data remains distributed at remote clients in a network. Though FL enables a privacy-preserving mobile edge computing framework…

Machine Learning · Computer Science 2022-01-11 Xingyu Li , Zhe Qu , Shangqing Zhao , Bo Tang , Zhuo Lu , Yao Liu

Federated learning (FL) is vulnerable to model poisoning attacks due to its distributed nature. The current defenses start from all user gradients (model updates) in each communication round and solve for the optimal aggregation gradients…

Machine Learning · Computer Science 2024-11-19 Jinbo Wang , Ruijin Wang , Fengli Zhang

Manipulation of local training data and local updates, i.e., the poisoning attack, is the main threat arising from the collaborative nature of the federated learning (FL) paradigm. Most existing poisoning attacks aim to manipulate local…

Machine Learning · Computer Science 2025-05-30 Huazi Pan , Yanjun Zhang , Leo Yu Zhang , Scott Adams , Abbas Kouzani , Suiyang Khoo

Recent research efforts indicate that federated learning (FL) systems are vulnerable to a variety of security breaches. While numerous defense strategies have been suggested, they are mainly designed to counter specific attack patterns and…

Cryptography and Security · Computer Science 2025-12-19 Henger Li , Tianyi Xu , Tao Li , Yunian Pan , Quanyan Zhu , Zizhan Zheng

Federated learning is a popular strategy for training models on distributed, sensitive data, while preserving data privacy. Prior work identified a range of security threats on federated learning protocols that poison the data or the model.…

Cryptography and Security · Computer Science 2022-08-30 Giorgio Severi , Matthew Jagielski , Gökberk Yar , Yuxuan Wang , Alina Oprea , Cristina Nita-Rotaru

Federated Learning (FL) enables collaborative deep learning training across multiple participants without exposing sensitive personal data. However, the distributed nature of FL and the unvetted participants' data makes it vulnerable to…

Machine Learning · Computer Science 2023-04-24 Manaar Alam , Hithem Lamri , Michail Maniatakos

Recent advances in federated learning have demonstrated its promising capability to learn on decentralized datasets. However, a considerable amount of work has raised concerns due to the potential risks of adversaries participating in the…

Machine Learning · Computer Science 2022-10-25 KiYoon Yoo , Nojun Kwak

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

In a federated learning (FL) system, malicious participants can easily embed backdoors into the aggregated model while maintaining the model's performance on the main task. To this end, various defenses, including training stage…

Machine Learning · Computer Science 2023-05-30 Henger Li , Chen Wu , Sencun Zhu , Zizhan Zheng

Federated Learning (FL) is a distributed paradigm aimed at protecting participant data privacy by exchanging model parameters to achieve high-quality model training. However, this distributed nature also makes FL highly vulnerable to…

Cryptography and Security · Computer Science 2025-09-26 Wei Wan , Yuxuan Ning , Zhicong Huang , Cheng Hong , Shengshan Hu , Ziqi Zhou , Yechao Zhang , Tianqing Zhu , Wanlei Zhou , Leo Yu Zhang

Federated machine learning which enables resource constrained node devices (e.g., mobile phones and IoT devices) to learn a shared model while keeping the training data local, can provide privacy, security and economic benefits by designing…

Cryptography and Security · Computer Science 2020-04-22 Gan Sun , Yang Cong , Jiahua Dong , Qiang Wang , Ji Liu

Distributed machine learning has been widely used in recent years to tackle the large and complex dataset problem. Therewith, the security of distributed learning has also drawn increasing attentions from both academia and industry. In this…

Machine Learning · Computer Science 2022-06-13 Zihao Zhao , Mengen Luo , Wenbo Ding

Federated learning is a machine learning paradigm that emerges as a solution to the privacy-preservation demands in artificial intelligence. As machine learning, federated learning is threatened by adversarial attacks against the integrity…

Cryptography and Security · Computer Science 2022-09-20 Nuria Rodríguez-Barroso , Daniel Jiménez López , M. Victoria Luzón , Francisco Herrera , Eugenio Martínez-Cámara

Federated Learning (FL) is an innovative approach to distributed machine learning. While FL offers significant privacy advantages, it also faces security challenges, particularly from poisoning attacks where adversaries deliberately…

Cryptography and Security · Computer Science 2024-09-23 Borja Molina-Coronado