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Federated Recommendation (FR) has received considerable popularity and attention in the past few years. In FR, for each user, its feature vector and interaction data are kept locally on its own client thus are private to others. Without the…

Cryptography and Security · Computer Science 2025-11-11 Dazhong Rong , Shuai Ye , Ruoyan Zhao , Hon Ning Yuen , Jianhai Chen , Qinming He

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), a privacy-preserving machine learning framework, faces significant data-related challenges. For example, the lack of suitable public datasets leads to ineffective information exchange, especially in heterogeneous…

Cryptography and Security · Computer Science 2025-04-22 Xi Li , Chen Wu , Jiaqi Wang

Is it secure to measure the reliability of local models by similarity in federated learning (FL)? This paper delves into an unexplored security threat concerning applying similarity metrics, such as the L_2 norm, Euclidean distance, and…

Machine Learning · Computer Science 2023-11-08 Zhilin Wang , Qin Hu , Xukai Zou

Federated Learning (FL) is a popular distributed machine learning paradigm that enables jointly training a global model without sharing clients' data. However, its repetitive server-client communication gives room for backdoor attacks with…

Machine Learning · Computer Science 2023-01-20 Pei Fang , Jinghui Chen

Federated learning (FL) is a distributed machine learning approach involving multiple clients collaboratively training a shared model. Such a system has the advantage of more training data from multiple clients, but data can be…

Machine Learning · Computer Science 2021-08-24 Sone Kyaw Pye , Han Yu

Healthcare is one of the foremost applications of machine learning (ML). Traditionally, ML models are trained by central servers, which aggregate data from various distributed devices to forecast the results for newly generated data. This…

Machine Learning · Computer Science 2023-10-12 Sankalp Vyas , Amar Nath Patra , Raj Mani Shukla

Federated recommendation is a prominent use case within federated learning, yet it remains susceptible to various attacks, from user to server-side vulnerabilities. Poisoning attacks are particularly notable among user-side attacks, as…

Cryptography and Security · Computer Science 2024-02-20 Ming Yin , Yichang Xu , Minghong Fang , Neil Zhenqiang Gong

Federated Learning (FL) is a promising approach enabling multiple clients to train Deep Neural Networks (DNNs) collaboratively without sharing their local training data. However, FL is susceptible to backdoor (or targeted poisoning)…

Cryptography and Security · Computer Science 2023-08-23 Phillip Rieger , Torsten Krauß , Markus Miettinen , Alexandra Dmitrienko , Ahmad-Reza Sadeghi

In Asynchronous Federated Learning (AFL), the central server immediately updates the global model with each arriving client's contribution. As a result, clients perform their local training on different model versions, causing information…

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

Federated learning (FL) systems are susceptible to attacks from malicious actors who might attempt to corrupt the training model through various poisoning attacks. FL also poses new challenges in addressing group bias, such as ensuring fair…

Machine Learning · Computer Science 2023-06-08 Viktor Valadi , Xinchi Qiu , Pedro Porto Buarque de Gusmão , Nicholas D. Lane , Mina Alibeigi

Federated Learning is an emerging distributed collaborative learning paradigm used by many of applications nowadays. The effectiveness of federated learning relies on clients' collective efforts and their willingness to contribute local…

Computer Science and Game Theory · Computer Science 2022-05-24 Shuyu Kong , You Li , Hai Zhou

Federated learning (FL) is vulnerable to model poisoning attacks, in which malicious clients corrupt the global model via sending manipulated model updates to the server. Existing defenses mainly rely on Byzantine-robust FL methods, which…

Cryptography and Security · Computer Science 2022-10-25 Zaixi Zhang , Xiaoyu Cao , Jinyuan Jia , Neil Zhenqiang Gong

As an emerging technique, Federated Learning (FL) can jointly train a global model with the data remaining locally, which effectively solves the problem of data privacy protection through the encryption mechanism. The clients train their…

Machine Learning · Computer Science 2020-12-04 Yi Liu , Li Zhang , Ning Ge , Guanghao Li

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 collaborative machine learning (ML) approach, where multiple clients participate in training an ML model without exposing their private data. Fair and accurate assessment of client contributions facilitates…

Federated learning (FL), as a type of distributed machine learning frameworks, is vulnerable to external attacks on FL models during parameters transmissions. An attacker in FL may control a number of participant clients, and purposely…

Machine Learning · Computer Science 2021-01-29 Kang Wei , Jun Li , Ming Ding , Chuan Ma , Yo-Seb Jeon , H. Vincent Poor

Federated learning (FL) is a promising technique for learning-based functions in wireless networks, thanks to its distributed implementation capability. On the other hand, distributed learning may increase the risk of exposure to malicious…

Machine Learning · Computer Science 2025-04-28 Han Zhang , Hao Zhou , Medhat Elsayed , Majid Bavand , Raimundas Gaigalas , Yigit Ozcan , Melike Erol-Kantarci

Recent interest in leveraging federated learning (FL) for radio signal classification (SC) tasks has shown promise but FL-based SC remains susceptible to model poisoning adversarial attacks. These adversarial attacks mislead the ML model…

Signal Processing · Electrical Eng. & Systems 2025-05-12 Su Wang , Rajeev Sahay , Adam Piaseczny , Christopher G. Brinton