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In this work, we propose FLVoogd, an updated federated learning method in which servers and clients collaboratively eliminate Byzantine attacks while preserving privacy. In particular, servers use automatic Density-based Spatial Clustering…

Cryptography and Security · Computer Science 2022-07-04 Yuhang Tian , Rui Wang , Yanqi Qiao , Emmanouil Panaousis , Kaitai Liang

Federated Learning (FL) is an interesting strategy that enables the collaborative training of an AI model among different data owners without revealing their private datasets. Even so, FL has some privacy vulnerabilities that have been…

Machine Learning · Computer Science 2025-06-13 Xavier Martínez Luaña , Rebeca P. Díaz Redondo , Manuel Fernández Veiga

The proliferation of Internet of Things devices in critical infrastructure has created unprecedented cybersecurity challenges, necessitating collaborative threat detection mechanisms that preserve data privacy while maintaining robustness…

Cryptography and Security · Computer Science 2026-01-06 Milad Rahmati , Nima Rahmati

Federated learning (FL) provides a variety of privacy advantages by allowing clients to collaboratively train a model without sharing their private data. However, recent studies have shown that private information can still be leaked…

Machine Learning · Computer Science 2023-04-12 Yue Cui , Syed Irfan Ali Meerza , Zhuohang Li , Luyang Liu , Jiaxin Zhang , Jian Liu

Federated learning (FL) is a privacy-preserving learning paradigm that allows multiple parities to jointly train a powerful machine learning model without sharing their private data. According to the form of collaboration, FL can be further…

Cryptography and Security · Computer Science 2022-07-25 Haiqin Weng , Juntao Zhang , Xingjun Ma , Feng Xue , Tao Wei , Shouling Ji , Zhiyuan Zong

Federated learning (FL) enables distributed clients to collaboratively train a global model using local private data. Nevertheless, recent studies show that conventional FL algorithms still exhibit deficiencies in privacy protection, and…

Cryptography and Security · Computer Science 2026-03-31 Ruiyang Wang , Rong Pan , Zhengan Yao

Federated learning (FL) aims to collaboratively train the global model in a distributed manner by sharing the model parameters from local clients to a central server, thereby potentially protecting users' private information. Nevertheless,…

Machine Learning · Computer Science 2023-02-17 Zhe Li , Honglong Chen , Zhichen Ni , Huajie Shao

Federated Learning (FL) is becoming a popular paradigm for leveraging distributed data and preserving data privacy. However, due to the distributed characteristic, FL systems are vulnerable to Byzantine attacks that compromised clients…

Cryptography and Security · Computer Science 2024-07-19 Peishen Yan , Hao Wang , Tao Song , Yang Hua , Ruhui Ma , Ningxin Hu , Mohammad R. Haghighat , Haibing Guan

Privacy-preserving federated learning enables a population of distributed clients to jointly learn a shared model while keeping client training data private, even from an untrusted server. Prior works do not provide efficient solutions that…

Cryptography and Security · Computer Science 2022-02-22 David Byrd , Vaikkunth Mugunthan , Antigoni Polychroniadou , Tucker Hybinette Balch

Federated learning (FL) is recently surging as a promising decentralized deep learning (DL) framework that enables DL-based approaches trained collaboratively across clients without sharing private data. However, in the context of the…

Machine Learning · Computer Science 2023-02-24 Van-Tuan Tran , Huy-Hieu Pham , Kok-Seng Wong

Federated Learning (FL) emerged as a learning method to enable the server to train models over data distributed among various clients. These clients are protective about their data being leaked to the server, any other client, or an…

Machine Learning · Computer Science 2025-01-27 Uday Bhaskar , Varul Srivastava , Avyukta Manjunatha Vummintala , Naresh Manwani , Sujit Gujar

Federated learning (FL) is a framework for machine learning across heterogeneous client devices in a privacy-preserving fashion. To date, most FL algorithms learn a "global" server model across multiple rounds. At each round, the same…

Machine Learning · Computer Science 2022-08-22 Zachary Charles , Kallista Bonawitz , Stanislav Chiknavaryan , Brendan McMahan , Blaise Agüera y Arcas

Federated Learning (FL) has emerged as an effective learning paradigm for distributed computation owing to its strong potential in capturing underlying data statistics while preserving data privacy. However, in cases of practical data…

Machine Learning · Computer Science 2023-05-22 Achintha Wijesinghe , Songyang Zhang , Zhi Ding

There is a rapid increase in the cooperative learning paradigm in online learning settings, i.e., federated learning (FL). Unlike most FL settings, there are many situations where the agents are competitive. Each agent would like to learn…

Machine Learning · Computer Science 2023-05-30 Sambhav Solanki , Samhita Kanaparthy , Sankarshan Damle , Sujit Gujar

Federated learning (FL) as distributed machine learning has gained popularity as privacy-aware Machine Learning (ML) systems have emerged as a technique that prevents privacy leakage by building a global model and by conducting…

Cryptography and Security · Computer Science 2023-07-17 Taki Hasan Rafi , Faiza Anan Noor , Tahmid Hussain , Dong-Kyu Chae

Federated Learning (FL), a privacy-aware approach in distributed deep learning environments, enables many clients to collaboratively train a model without sharing sensitive data, thereby reducing privacy risks. However, enabling human trust…

Machine Learning · Computer Science 2025-11-14 Dario Fenoglio , Gabriele Dominici , Pietro Barbiero , Alberto Tonda , Martin Gjoreski , Marc Langheinrich

Federated learning enables training a global machine learning model from data distributed across multiple sites, without having to move the data. This is particularly relevant in healthcare applications, where data is rife with personal,…

Cryptography and Security · Computer Science 2020-02-24 Olivia Choudhury , Aris Gkoulalas-Divanis , Theodoros Salonidis , Issa Sylla , Yoonyoung Park , Grace Hsu , Amar Das

Federated learning (FL) is a widely used method for training machine learning (ML) models in a scalable way while preserving privacy (i.e., without centralizing raw data). Prior research shows that the risk of exposing sensitive data…

Machine Learning · Computer Science 2025-11-06 Andras Ferenczi , Sutapa Samanta , Dagen Wang , Todd Hodges

Prior efforts in enhancing federated learning (FL) security fall into two categories. At one end of the spectrum, some work uses secure aggregation techniques to hide the individual client's updates and only reveal the aggregated global…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-06-01 Lun Wang , Qi Pang , Shuai Wang , Dawn Song

In federated learning, most existing robust aggregation rules (AGRs) combat Byzantine attacks in the IID setting, where client data is assumed to be independent and identically distributed. In this paper, we address label skewness, a more…

Machine Learning · Computer Science 2024-03-21 Wenxuan Bao , Jun Wu , Jingrui He