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Federated learning (FL) is an emerging collaborative learning paradigm that aims to protect data privacy. Unfortunately, recent works show FL algorithms are vulnerable to the serious data reconstruction attacks. However, existing works lack…

Cryptography and Security · Computer Science 2024-08-23 Zifan Wang , Binghui Zhang , Meng Pang , Yuan Hong , Binghui Wang

Federated learning (FL) emerged as a promising learning paradigm to enable a multitude of participants to construct a joint ML model without exposing their private training data. Existing FL designs have been shown to exhibit…

Cryptography and Security · Computer Science 2021-08-17 Lingjuan Lyu , Chen Chen

Privacy of the clients' data and security against Byzantine clients are key challenges in Federated Learning (FL). Existing solutions to joint privacy and security incur sacrifices on the privacy guarantee. We introduce LoByITFL, the first…

Information Theory · Computer Science 2025-06-16 Yue Xia , Maximilian Egger , Christoph Hofmeister , Rawad Bitar

Federated Learning (FL) has garnered significant attention for its potential to protect user privacy while enhancing model training efficiency. For that reason, FL has found its use in various domains, from healthcare to industrial…

Cryptography and Security · Computer Science 2024-06-05 Tre' R. Jeter , Truc Nguyen , Raed Alharbi , My T. Thai

Privacy and Byzantine resilience are two indispensable requirements for a federated learning (FL) system. Although there have been extensive studies on privacy and Byzantine security in their own track, solutions that consider both remain…

Machine Learning · Computer Science 2023-08-03 Zihang Xiang , Tianhao Wang , Wanyu Lin , Di Wang

Federated learning (FL) is a decentralized machine learning technique that allows multiple entities to jointly train a model while preserving dataset privacy. However, its distributed nature has raised various security concerns, which have…

Cryptography and Security · Computer Science 2025-01-06 Nuno Neves

Federated Learning (FL) is a promising approach for multiparty collaboration as a privacy-preserving technique in hardware assurance, but its security against adversaries with domain-specific knowledge is underexplored. This paper…

Cryptography and Security · Computer Science 2026-04-23 Gijung Lee , Wavid Bowman , Olivia P. Dizon-Paradis , Reiner N. Dizon-Paradis , Ronald Wilson , Damon L. Woodard , Domenic Forte

Federated learning (FL) enables collaborative model training while preserving data privacy. However, it remains vulnerable to malicious clients who compromise model integrity through Byzantine attacks, data poisoning, or adaptive…

Machine Learning · Computer Science 2026-05-13 Abolfazl Younesi , Leon Kiss , Zahra Najafabadi Samani , Juan Aznar Poveda , Thomas Fahringer

Privacy-preserving federated averaging is a central approach for protecting client privacy in federated learning. In this paper, we study this problem in an asynchronous communications setting with malicious aggregators. We propose a new…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-01-09 Antonella Del Pozzo , Achille Desreumaux , Mathieu Gestin , Alexandre Rapetti , Sara Tucci-Piergiovanni

Federated learning (FL) allows multiple data-owners to collaboratively train machine learning models by exchanging local gradients, while keeping their private data on-device. To simultaneously enhance privacy and training efficiency,…

Image and Video Processing · Electrical Eng. & Systems 2025-06-06 Hasin Us Sami , Swapneel Sen , Amit K. Roy-Chowdhury , Srikanth V. Krishnamurthy , Basak Guler

Federated learning is a decentralized machine learning approach where clients train models locally and share model updates to develop a global model. This enables low-resource devices to collaboratively build a high-quality model without…

Cryptography and Security · Computer Science 2024-12-10 Li Bai , Haibo Hu , Qingqing Ye , Haoyang Li , Leixia Wang , Jianliang Xu

Federated learning (FL) has been widely adopted as a decentralized training paradigm that enables multiple clients to collaboratively learn a shared model without exposing their local data. As concerns over data privacy and regulatory…

Cryptography and Security · Computer Science 2025-08-22 Bingguang Lu , Hongsheng Hu , Yuantian Miao , Shaleeza Sohail , Chaoxiang He , Shuo Wang , Xiao Chen

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

Gradient inversion attack (or input recovery from gradient) is an emerging threat to the security and privacy preservation of Federated learning, whereby malicious eavesdroppers or participants in the protocol can recover (partially) the…

Cryptography and Security · Computer Science 2021-12-02 Yangsibo Huang , Samyak Gupta , Zhao Song , Kai Li , Sanjeev Arora

Federated learning has created a decentralized method to train a machine learning model without needing direct access to client data. The main goal of a federated learning architecture is to protect the privacy of each client while still…

Cryptography and Security · Computer Science 2023-12-11 Marc Vucovich , Devin Quinn , Kevin Choi , Christopher Redino , Abdul Rahman , Edward Bowen

Federated Learning (FL) has become a cornerstone of privacy protection, shifting the paradigm towards localizing sensitive data while only sending model gradients to a central server. This strategy is designed to reinforce privacy…

Machine Learning · Computer Science 2024-10-14 H. Yi , H. Ren , C. Hu , Y. Li , J. Deng , X. Xie

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

Decentralized federated learning (DFL) is inherently vulnerable to data poisoning attacks, as malicious clients can transmit manipulated gradients to neighboring clients. Existing defense methods either reject suspicious gradients per…

Machine Learning · Computer Science 2025-07-08 Bin Li , Xiaoye Miao , Yan Zhang , Jianwei Yin

Federated learning (FL) enables multiple clients to collaboratively train models without sharing their local data, and becomes an important privacy-preserving machine learning framework. However, classical FL faces serious security and…

Cryptography and Security · Computer Science 2023-07-27 Jingwei Yi , Fangzhao Wu , Huishuai Zhang , Bin Zhu , Tao Qi , Guangzhong Sun , Xing Xie

Federated Learning (FL) enables collaborative training of Deep Learning (DL) models where the data is retained locally. Like DL, FL has severe security weaknesses that the attackers can exploit, e.g., model inversion and backdoor attacks.…

Cryptography and Security · Computer Science 2023-03-01 Gorka Abad , Servio Paguada , Oguzhan Ersoy , Stjepan Picek , Víctor Julio Ramírez-Durán , Aitor Urbieta