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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

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 is emerging as a machine learning technique that trains a model across multiple decentralized parties. It is renowned for preserving privacy as the data never leaves the computational devices, and recent approaches…

Machine Learning · Computer Science 2021-06-25 Yuchen Li , Yifan Bao , Liyao Xiang , Junhan Liu , Cen Chen , Li Wang , Xinbing Wang

Federated graph learning (FedGL) is an emerging federated learning (FL) framework that extends FL to learn graph data from diverse sources. FL for non-graph data has shown to be vulnerable to backdoor attacks, which inject a shared backdoor…

Cryptography and Security · Computer Science 2024-07-15 Yuxin Yang , Qiang Li , Jinyuan Jia , Yuan Hong , Binghui Wang

Federated Learning enables collaborative training of machine learning models on decentralized data. This scheme, however, is vulnerable to adversarial attacks, when some of the clients submit corrupted model updates. In real-world…

Machine Learning · Computer Science 2025-05-06 Aleksandr Karakulev , Usama Zafar , Salman Toor , Prashant Singh

Federated learning is particularly susceptible to model poisoning and backdoor attacks because individual users have direct control over the training data and model updates. At the same time, the attack power of an individual user is…

Machine Learning · Computer Science 2022-10-18 Yuxin Wen , Jonas Geiping , Liam Fowl , Hossein Souri , Rama Chellappa , Micah Goldblum , Tom Goldstein

Federated learning allows for clients in a distributed system to jointly train a machine learning model. However, clients' models are vulnerable to attacks during the training and testing phases. In this paper, we address the issue of…

Machine Learning · Computer Science 2023-10-24 Taejin Kim , Shubhranshu Singh , Nikhil Madaan , Carlee Joe-Wong

For model privacy, local model parameters in federated learning shall be obfuscated before sent to the remote aggregator. This technique is referred to as \emph{secure aggregation}. However, secure aggregation makes model poisoning attacks…

Cryptography and Security · Computer Science 2024-04-26 Zhuosheng Zhang , Jiarui Li , Shucheng Yu , Christian Makaya

Federated Learning (FL) is a distributed learning paradigm that enables multiple clients to collaborate on building a machine learning model without sharing their private data. Although FL is considered privacy-preserved by design, recent…

Machine Learning · Computer Science 2026-05-18 Yongcun Song , Ziqi Wang , Enrique Zuazua

Deploying Connected and Automated Vehicles (CAVs) on top of 5G and Beyond networks (5GB) makes them vulnerable to increasing vectors of security and privacy attacks. In this context, a wide range of advanced machine/deep learning based…

Cryptography and Security · Computer Science 2024-07-04 Abdelaziz Amara korba , Abdelwahab Boualouache , Bouziane Brik , Rabah Rahal , Yacine Ghamri-Doudane , Sidi Mohammed Senouci

In federated learning, each participant trains its local model with its own data and a global model is formed at a trusted server by aggregating model updates coming from these participants. Since the server has no effect and visibility on…

Machine Learning · Computer Science 2023-06-19 Ece Isik-Polat , Gorkem Polat , Altan Kocyigit

Federated Learning (FL) enables collaborative model training across distributed devices while preserving local data privacy, making it ideal for mobile and embedded systems. However, the decentralized nature of FL also opens vulnerabilities…

Machine Learning · Computer Science 2026-05-08 Kichang Lee , Yujin Shin , Jonghyuk Yun , Songkuk Kim , Jun Han , JeongGil Ko

Federated Learning lends itself as a promising paradigm in enabling distributed learning for autonomous vehicles applications and ensuring data privacy while enhancing and refining predictive model performance through collaborative training…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-09-25 Md Jueal Mia , M. Hadi Amini

Federated Learning (FL) has received increasing attention due to its privacy protection capability. However, the base algorithm FedAvg is vulnerable when it suffers from so-called backdoor attacks. Former researchers proposed several robust…

Cryptography and Security · Computer Science 2022-12-29 Jianyi Zhang , Fangjiao Zhang , Qichao Jin , Zhiqiang Wang , Xiaodong Lin , Xiali Hei

Federated learning (FL) is a machine learning (ML) approach that allows the use of distributed data without compromising personal privacy. However, the heterogeneous distribution of data among clients in FL can make it difficult for the…

Machine Learning · Computer Science 2023-03-07 Thuy Dung Nguyen , Tuan Nguyen , Phi Le Nguyen , Hieu H. Pham , Khoa Doan , Kok-Seng Wong

Collaborative machine learning and related techniques such as federated learning allow multiple participants, each with his own training dataset, to build a joint model by training locally and periodically exchanging model updates. We…

Cryptography and Security · Computer Science 2018-11-02 Luca Melis , Congzheng Song , Emiliano De Cristofaro , Vitaly Shmatikov

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) is a privacy-preserving machine learning technique that facilitates collaboration among participants across demographics. FL enables model sharing, while restricting the movement of data. Since FL provides…

Machine Learning · Computer Science 2025-10-15 Harsh Kasyap , Minghong Fang , Zhuqing Liu , Carsten Maple , Somanath Tripathy

Federated learning is a prominent framework that enables clients (e.g., mobile devices or organizations) to train a collaboratively global model under a central server's orchestration while keeping local training datasets' privacy. However,…

Machine Learning · Computer Science 2021-07-20 Farnaz Tahmasebian , Jian Lou , Li Xiong

Federated learning (FL) has recently gained significant momentum due to its potential to leverage large-scale distributed user data while preserving user privacy. However, the typical paradigm of FL faces challenges of both privacy and…

Cryptography and Security · Computer Science 2025-05-29 Sizai Hou , Songze Li , Tayyebeh Jahani-Nezhad , Giuseppe Caire