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With the booming deployment of Internet of Things, health monitoring applications have gradually prospered. Within the recent COVID-19 pandemic situation, interest in permanent remote health monitoring solutions has raised, targeting to…

Machine Learning · Computer Science 2022-12-01 Dong Chu , Wael Jaafar , Halim Yanikomeroglu

Federated Learning (FL) exhibits privacy vulnerabilities under gradient inversion attacks (GIAs), which can extract private information from individual gradients. To enhance privacy, FL incorporates Secure Aggregation (SA) to prevent the…

Cryptography and Security · Computer Science 2024-06-25 Zhibo Wang , Zhiwei Chang , Jiahui Hu , Xiaoyi Pang , Jiacheng Du , Yongle Chen , Kui Ren

Federated Learning (FL) has emerged as a promising privacy-preserving collaborative model training paradigm without sharing raw data. However, recent studies have revealed that private information can still be leaked through shared gradient…

Cryptography and Security · Computer Science 2026-01-12 Pengxin Guo , Runxi Wang , Shuang Zeng , Jinjing Zhu , Haoning Jiang , Yanran Wang , Yuyin Zhou , Feifei Wang , Hui Xiong , Liangqiong Qu

Wireless Federated Learning (FL) is an emerging distributed machine learning paradigm, particularly gaining momentum in domains with confidential and private data on mobile clients. However, the location-dependent performance, in terms of…

Machine Learning · Computer Science 2024-01-18 Mohamed Ads , Hesham ElSawy , Hossam S. Hassanein

Over-the-air federated learning (OTA-FL) improves communication efficiency by exploiting the superposition property of wireless channels, but this same property also creates a critical security vulnerability: the parameter server (PS)…

Cryptography and Security · Computer Science 2026-05-20 Xiaoyan Ma , Seohyun Lee , Taejoon Kim , Christopher G. Brinton

In this paper, we investigate the transmission latency of the secure aggregation problem in a \emph{wireless} federated learning system with multiple curious servers. We propose a privacy-preserving coded aggregation scheme where the…

Information Theory · Computer Science 2025-07-01 Zhenhao Huang , Kai Liang , Yuanming Shi , Songze Li , Youlong Wu

Secure aggregation is commonly used in federated learning (FL) to alleviate privacy concerns related to the central aggregator seeing all parameter updates in the clear. Unfortunately, most existing secure aggregation schemes ignore two…

Federated learning (FL) allows the collaborative training of AI models without needing to share raw data. This capability makes it especially interesting for healthcare applications where patient and data privacy is of utmost concern.…

Federated Learning (FL) enables mobile edge devices, functioning as clients, to collaboratively train a decentralized model while ensuring local data privacy. However, the efficiency of FL in wireless networks is limited not only by…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-01-01 Yanbing Yang , Huiling Zhu , Wenchi Cheng , Jingqing Wang , Changrun Chen , Jiangzhou Wang

The recent advancement of foundation models (FMs) has increased the demand for fine-tuning these models on large-scale cross-domain datasets. To address this, federated fine-tuning has emerged, allowing FMs to be fine-tuned on distributed…

Machine Learning · Computer Science 2025-11-07 Ziyao Wang , Bowei Tian , Yexiao He , Zheyu Shen , Guoheng Sun , Yuhan Liu , Luyang Liu , Meng Liu , Ang Li

With the emergence of privacy leaks in federated learning, secure aggregation protocols that mainly adopt either homomorphic encryption or threshold secret sharing have been widely developed for federated learning to protect the privacy of…

Cryptography and Security · Computer Science 2024-06-03 Xue Yang , Zifeng Liu , Xiaohu Tang , Rongxing Lu , Bo Liu

We study the fundamental communication limits of information-theoretic secure aggregation in a hierarchical network consisting of a server, multiple relays, and multiple users per relay. Communication proceeds over two rounds and two hops,…

Information Theory · Computer Science 2026-03-23 Zhou Li , Yizhou Zhao , Xiang Zhang , Giuseppe Caire

Due to its distributed methodology alongside its privacy-preserving features, Federated Learning (FL) is vulnerable to training time adversarial attacks. In this study, our focus is on backdoor attacks in which the adversary's goal is to…

Machine Learning · Computer Science 2021-02-11 Omid Aramoon , Pin-Yu Chen , Gang Qu , Yuan Tian

Federated learning (FL) offers a privacy-preserving collaborative approach for training models in wireless networks, with channel estimation emerging as a promising application. Despite extensive studies on FL-empowered channel estimation,…

Machine Learning · Computer Science 2024-07-31 Zexin Fang , Bin Han , Hans D. Schotten

Federated learning (FL) enables on-device training over distributed networks consisting of a massive amount of modern smart devices, such as smartphones and IoT (Internet of Things) devices. However, the leading optimization algorithm in…

Machine Learning · Computer Science 2019-09-04 Xin Yao , Tianchi Huang , Chenglei Wu , Rui-Xiao Zhang , Lifeng Sun

Despite federated learning (FL)'s potential in collaborative learning, its performance has deteriorated due to the data heterogeneity of distributed users. Recently, clustered federated learning (CFL) has emerged to address this challenge…

Cryptography and Security · Computer Science 2025-06-17 Zhiqiang Li , Haiyong Bao , Menghong Guan , Hao Pan , Cheng Huang , Hong-Ning Dai

Aiming at privacy preservation, Federated Learning (FL) is an emerging machine learning approach enabling model training on decentralized devices or data sources. The learning mechanism of FL relies on aggregating parameter updates from…

Machine Learning · Computer Science 2024-05-21 Jiayan Chen , Zhirong Qian , Tianhui Meng , Xitong Gao , Tian Wang , Weijia Jia

Federated learning (FL) has gained increasing attention due to privacy-preserving collaborative training on decentralized clients, mitigating the need to upload sensitive data to a central server directly. Nonetheless, recent research has…

Machine Learning · Computer Science 2025-04-04 Shourya Goel , Himanshi Tibrewal , Anant Jain , Anshul Pundhir , Pravendra Singh

Federated learning (FL) has emerged as a secure paradigm for collaborative training among clients. Without data centralization, FL allows clients to share local information in a privacy-preserving manner. This approach has gained…

Machine Learning · Computer Science 2024-02-20 Jiawei Shao , Zijian Li , Wenqiang Sun , Tailin Zhou , Yuchang Sun , Lumin Liu , Zehong Lin , Yuyi Mao , Jun Zhang

In federated learning, multiple parties train models locally and share their parameters with a central server, which aggregates them to update a global model. To address the risk of exposing sensitive data through local models, secure…