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Federated Learning (FL) is increasingly applied in sectors like healthcare, finance, and IoT, enabling collaborative model training while safeguarding user privacy. However, FL systems are susceptible to Byzantine adversaries that inject…

Machine Learning · Computer Science 2026-03-18 Reek Das , Biplab Kanti Sen

Federated learning (FL) has been widely deployed to enable machine learning training on sensitive data across distributed devices. However, the decentralized learning paradigm and heterogeneity of FL further extend the attack surface for…

Cryptography and Security · Computer Science 2024-04-16 Haomin Zhuang , Mingxian Yu , Hao Wang , Yang Hua , Jian Li , Xu Yuan

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 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 distributed machine learning paradigm that enables training models on decentralized data. The field of FL security against poisoning attacks is plagued with confusion due to the proliferation of research that…

Machine Learning · Computer Science 2024-03-12 Hamid Mozaffari , Sunav Choudhary , Amir Houmansadr

In Federated Learning (FL), the distributed nature and heterogeneity of client data present both opportunities and challenges. While collaboration among clients can significantly enhance the learning process, not all collaborations are…

Machine Learning · Computer Science 2024-07-18 Nazarii Tupitsa , Samuel Horváth , Martin Takáč , Eduard Gorbunov

Adversarial attacks pose significant challenges in many machine learning applications, particularly in the setting of distributed training and federated learning, where malicious agents seek to corrupt the training process with the goal of…

Machine Learning · Computer Science 2025-06-10 Nicolás García Trillos , Aditya Kumar Akash , Sixu Li , Konstantin Riedl , Yuhua Zhu

Federated learning faces increasing threats from model poisoning attacks, which harms its application to improve privacy. Existing defense methods typically rely on fixed thresholds or perform clustering with a fixed number of clusters to…

Cryptography and Security · Computer Science 2026-05-22 Tianyun Zhang , Zhen Yang , Haozhao Wang , Ru Zhang , Yongfeng Huang

Federated learning security research has predominantly focused on backdoor threats from a minority of malicious clients that intentionally corrupt model updates. This paper challenges this paradigm by investigating a more pervasive and…

Cryptography and Security · Computer Science 2026-02-18 Haodong Zhao , Jinming Hu , Gongshen Liu

Federated learning (FL) is a distributed learning process that uses a trusted aggregation server to allow multiple parties (or clients) to collaboratively train a machine learning model without having them share their private data. Recent…

Cryptography and Security · Computer Science 2023-10-04 Jorge Castillo , Phillip Rieger , Hossein Fereidooni , Qian Chen , Ahmad Sadeghi

Collaborative learning in peer-to-peer networks offers the benefits of distributed learning while mitigating the risks associated with single points of failure inherent in centralized servers. However, adversarial workers pose potential…

Machine Learning · Computer Science 2025-01-09 Chandreyee Bhowmick , Xenofon Koutsoukos

At the same time that artificial intelligence is becoming popular, concern and the need for regulation is growing, including among other requirements the data privacy. In this context, Federated Learning is proposed as a solution to data…

Cryptography and Security · Computer Science 2025-04-18 Nuria Rodríguez-Barroso , M. Victoria Luzón , Francisco Herrera

Federated learning (FL) enables the training of models among distributed clients without compromising the privacy of training datasets, while the invisibility of clients datasets and the training process poses a variety of security threats.…

Cryptography and Security · Computer Science 2023-01-18 Subhash Sagar , Chang-Sun Li , Seng W. Loke , Jinho Choi

Federated learning (FL) is a distributed learning paradigm that preserves users' data privacy while leveraging the entire dataset of all participants. In FL, multiple models are trained independently on the clients and aggregated centrally…

Machine Learning · Computer Science 2023-01-11 Amin Eslami Abyane , Derui Zhu , Roberto Souza , Lei Ma , Hadi Hemmati

Federated learning (FL) has emerged to enable global model training over distributed clients' data while preserving its privacy. However, the global trained model is vulnerable to the evasion attacks especially, the adversarial examples…

Machine Learning · Computer Science 2022-06-07 Ahmed Aldahdooh , Wassim Hamidouche , Olivier Déforges

Federated Learning (FL) is designed to prevent data leakage through collaborative model training without centralized data storage. However, it remains vulnerable to gradient reconstruction attacks that recover original training data from…

Machine Learning · Computer Science 2024-11-07 Yuxiao Chen , Gamze Gürsoy , Qi Lei

Recent studies have shown that federated learning (FL) is vulnerable to poisoning attacks that inject a backdoor into the global model. These attacks are effective even when performed by a single client, and undetectable by most existing…

Cryptography and Security · Computer Science 2021-04-20 Sebastien Andreina , Giorgia Azzurra Marson , Helen Möllering , Ghassan Karame

Federated Learning (FL) is a new machine learning framework, which enables millions of participants to collaboratively train machine learning model without compromising data privacy and security. Due to the independence and confidentiality…

Machine Learning · Computer Science 2020-11-17 Anbu Huang

The decentralized nature of federated learning makes detecting and defending against adversarial attacks a challenging task. This paper focuses on backdoor attacks in the federated learning setting, where the goal of the adversary is to…

Machine Learning · Computer Science 2019-12-04 Ziteng Sun , Peter Kairouz , Ananda Theertha Suresh , H. Brendan McMahan

In the evolving landscape of Federated Learning (FL), the challenge of ensuring data integrity against poisoning attacks is paramount, particularly for applications demanding stringent privacy preservation. Traditional anomaly detection…

Cryptography and Security · Computer Science 2024-03-18 Zahir Alsulaimawi