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Recent work has shown that gradient updates in federated learning (FL) can unintentionally reveal sensitive information about a client's local data. This risk becomes significantly greater when a malicious server manipulates the global…

机器学习 · 计算机科学 2025-06-26 Fei Wang , Baochun Li

Federated recommendation systems can provide good performance without collecting users' private data, making them attractive. However, they are susceptible to low-cost poisoning attacks that can degrade their performance. In this paper, we…

机器学习 · 计算机科学 2020-06-16 Chen Chen , Jingfeng Zhang , Anthony K. H. Tung , Mohan Kankanhalli , Gang Chen

Federated learning is known to be vulnerable to both security and privacy issues. Existing research has focused either on preventing poisoning attacks from users or on concealing the local model updates from the server, but not both.…

机器学习 · 计算机科学 2024-06-05 Truc Nguyen , My T. Thai

We investigate a specific security risk in FL: a group of malicious clients has impacted the model during training by disguising their identities and acting as benign clients but later switching to an adversarial role. They use their data,…

机器学习 · 计算机科学 2024-11-22 Yijiang Li , Ying Gao , Haohan Wang

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…

机器学习 · 计算机科学 2023-10-24 Taejin Kim , Shubhranshu Singh , Nikhil Madaan , Carlee Joe-Wong

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…

密码学与安全 · 计算机科学 2022-05-09 Xiaoyu Cao , Neil Zhenqiang Gong

Federated learning enables training collaborative machine learning models at scale with many participants whilst preserving the privacy of their datasets. Standard federated learning techniques are vulnerable to Byzantine failures, biased…

机器学习 · 统计学 2019-09-12 Luis Muñoz-González , Kenneth T. Co , Emil C. Lupu

Current defense mechanisms against model poisoning attacks in federated learning (FL) systems have proven effective up to a certain threshold of malicious clients. In this work, we introduce FLANDERS, a novel pre-aggregation filter for FL…

机器学习 · 计算机科学 2026-03-03 Edoardo Gabrielli , Dimitri Belli , Zoe Matrullo , Vittorio Miori , Gabriele Tolomei

Federated learning (FL) enables decentralized machine learning without sharing raw data, allowing multiple clients to collaboratively learn a global model. However, studies reveal that privacy leakage is possible under commonly adopted FL…

机器学习 · 计算机科学 2025-06-16 Kai Yue , Richeng Jin , Chau-Wai Wong , Huaiyu Dai

Federated learning is a distributed framework designed to address privacy concerns. However, it introduces new attack surfaces, which are especially prone when data is non-Independently and Identically Distributed. Existing approaches fail…

密码学与安全 · 计算机科学 2025-05-27 Hyejun Jeong , Hamin Son , Seohu Lee , Jayun Hyun , Tai-Myoung Chung

Federated learning (FL), as a powerful learning paradigm, trains a shared model by aggregating model updates from distributed clients. However, the decoupling of model learning from local data makes FL highly vulnerable to backdoor attacks,…

密码学与安全 · 计算机科学 2025-03-07 Xiyue Zhang , Xiaoyong Xue , Xiaoning Du , Xiaofei Xie , Yang Liu , Meng Sun

Federated learning (FL) is vulnerable to poisoning attacks, where malicious clients upload manipulated updates to degrade the performance of the global model. Although detection methods can identify and remove malicious clients, the model…

机器学习 · 计算机科学 2026-05-05 Wenwei Zhao , Xiaowen Li , Yao Liu , Zhuo Lu

Federated learning is a distributed training framework vulnerable to Byzantine attacks, particularly when over 50% of clients are malicious or when datasets are highly non-independent and identically distributed (non-IID). Additionally,…

密码学与安全 · 计算机科学 2025-08-04 Haocheng Jiang , Hua Shen , Jixin Zhang , Willy Susilo , Mingwu Zhang

Federated Learning is a distributed machine learning framework designed for data privacy preservation i.e., local data remain private throughout the entire training and testing procedure. Federated Learning is gaining popularity because it…

机器学习 · 计算机科学 2022-12-02 Hyejun Jeong , Joonyong Hwang , Tai Myung Chung

We propose FedGT, a novel framework for identifying malicious clients in federated learning with secure aggregation. Inspired by group testing, the framework leverages overlapping groups of clients to identify the presence of malicious…

机器学习 · 计算机科学 2024-07-11 Marvin Xhemrishi , Johan Östman , Antonia Wachter-Zeh , Alexandre Graell i Amat

Federated Learning (FL) protects data privacy while providing a decentralized method for training models. However, because of the distributed schema, it is susceptible to adversarial clients that could alter results or sabotage model…

密码学与安全 · 计算机科学 2025-06-23 Likhitha Annapurna Kavuri , Akshay Mhatre , Akarsh K Nair , Deepti Gupta

Federated learning is vulnerable to various attacks, such as model poisoning and backdoor attacks, even if some existing defense strategies are used. To address this challenge, we propose an attack-adaptive aggregation strategy to defend…

机器学习 · 计算机科学 2021-08-09 Ching Pui Wan , Qifeng Chen

Federated learning (FL) enables multiple clients to collaboratively train an accurate global model while protecting clients' data privacy. However, FL is susceptible to Byzantine attacks from malicious participants. Although the problem has…

密码学与安全 · 计算机科学 2023-08-08 Wei Wan , Shengshan Hu , Jianrong Lu , Leo Yu Zhang , Hai Jin , Yuanyuan He

Due to its distributed nature, federated learning is vulnerable to poisoning attacks, in which malicious clients poison the training process via manipulating their local training data and/or local model updates sent to the cloud server,…

密码学与安全 · 计算机科学 2022-10-05 Xiaoyu Cao , Zaixi Zhang , Jinyuan Jia , Neil Zhenqiang Gong

Federated Learning (FL) has become a powerful technique for training Machine Learning (ML) models in a decentralized manner, preserving the privacy of the training datasets involved. However, the decentralized nature of FL limits the…