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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 decentralized machine learning technique that allows multiple entities to jointly train a model while preserving dataset privacy. However, its distributed nature has raised various security concerns, which have…

Cryptography and Security · Computer Science 2025-01-06 Nuno Neves

Federated learning allows clients to collaboratively train a global model without uploading raw data for privacy preservation. This feature, i.e., the inability to review participants' datasets, has recently been found responsible for…

Machine Learning · Computer Science 2023-12-19 Yihang Lin , Pengyuan Zhou , Zhiqian Wu , Yong Liao

Federated learning (FL) enables multiple clients to collaboratively train machine learning models under the coordination of a central server, while maintaining privacy. However, the server cannot directly monitor the local training…

Machine Learning · Computer Science 2025-07-23 Binbin Ding , Penghui Yang , Sheng-Jun Huang

Federated learning (FL) has been widely adopted as a decentralized training paradigm that enables multiple clients to collaboratively learn a shared model without exposing their local data. As concerns over data privacy and regulatory…

Cryptography and Security · Computer Science 2025-08-22 Bingguang Lu , Hongsheng Hu , Yuantian Miao , Shaleeza Sohail , Chaoxiang He , Shuo Wang , Xiao Chen

Split learning is a collaborative learning design that allows several participants (clients) to train a shared model while keeping their datasets private. Recent studies demonstrate that collaborative learning models, specifically federated…

Cryptography and Security · Computer Science 2023-05-29 Behrad Tajalli , Oguzhan Ersoy , Stjepan Picek

Federated learning enables thousands of participants to construct a deep learning model without sharing their private training data with each other. For example, multiple smartphones can jointly train a next-word predictor for keyboards…

Cryptography and Security · Computer Science 2019-08-07 Eugene Bagdasaryan , Andreas Veit , Yiqing Hua , Deborah Estrin , Vitaly Shmatikov

Deep Learning-based image synthesis techniques have been applied in healthcare research for generating medical images to support open research and augment medical datasets. Training generative adversarial neural networks (GANs) usually…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Ruinan Jin , Xiaoxiao Li

Federated learning (FL) enables multiple parties to collaboratively train a machine learning model without sharing their data; rather, they train their own model locally and send updates to a central server for aggregation. Depending on how…

Machine Learning · Computer Science 2023-08-25 Mohammad Naseri , Yufei Han , Emiliano De Cristofaro

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), which aims to facilitate data collaboration across multiple organizations without exposing data privacy, encounters potential security risks. One serious threat is backdoor attacks, where an attacker injects a…

Cryptography and Security · Computer Science 2023-06-21 Yuexin Xuan , Xiaojun Chen , Zhendong Zhao , Bisheng Tang , Ye Dong

Federated Learning (FL) is a collaborative machine learning technique where multiple clients work together with a central server to train a global model without sharing their private data. However, the distribution shift across non-IID…

Machine Learning · Computer Science 2024-06-11 Xiaoting Lyu , Yufei Han , Wei Wang , Jingkai Liu , Yongsheng Zhu , Guangquan Xu , Jiqiang Liu , Xiangliang Zhang

Recently, researchers have successfully employed Graph Neural Networks (GNNs) to build enhanced recommender systems due to their capability to learn patterns from the interaction between involved entities. In addition, previous studies have…

Machine Learning · Computer Science 2023-11-29 Marco Arazzi , Mauro Conti , Antonino Nocera , Stjepan Picek

Federated learning is a popular strategy for training models on distributed, sensitive data, while preserving data privacy. Prior work identified a range of security threats on federated learning protocols that poison the data or the model.…

Cryptography and Security · Computer Science 2022-08-30 Giorgio Severi , Matthew Jagielski , Gökberk Yar , Yuxuan Wang , Alina Oprea , Cristina Nita-Rotaru

Federated self-supervised learning (FSSL) has recently emerged as a promising paradigm that enables the exploitation of clients' vast amounts of unlabeled data while preserving data privacy. While FSSL offers advantages, its susceptibility…

Cryptography and Security · Computer Science 2024-05-24 Yuwen Qian , Shuchi Wu , Kang Wei , Ming Ding , Di Xiao , Tao Xiang , Chuan Ma , Song Guo

Federated learning is a decentralized machine learning approach where clients train models locally and share model updates to develop a global model. This enables low-resource devices to collaboratively build a high-quality model without…

Cryptography and Security · Computer Science 2024-12-10 Li Bai , Haibo Hu , Qingqing Ye , Haoyang Li , Leixia Wang , Jianliang Xu

Federated Learning (FL) has emerged as a leading paradigm for decentralized, privacy preserving machine learning training. However, recent research on gradient inversion attacks (GIAs) have shown that gradient updates in FL can leak…

Cryptography and Security · Computer Science 2024-05-20 Yichuan Shi , Olivera Kotevska , Viktor Reshniak , Abhishek Singh , Ramesh Raskar

Federated Contrastive Learning (FCL) is an emerging privacy-preserving paradigm in distributed learning for unlabeled data. In FCL, distributed parties collaboratively learn a global encoder with unlabeled data, and the global encoder could…

Cryptography and Security · Computer Science 2023-11-29 Yao Huang , Kongyang Chen , Jiannong Cao , Jiaxing Shen , Shaowei Wang , Yun Peng , Weilong Peng , Kechao Cai

The foundation models (FMs) have been used to generate synthetic public datasets for the heterogeneous federated learning (HFL) problem where each client uses a unique model architecture. However, the vulnerabilities of integrating FMs,…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-12-01 Xi Li , Chen Wu , Jiaqi Wang

Gradient inversion attack enables recovery of training samples from model gradients in federated learning (FL), and constitutes a serious threat to data privacy. To mitigate this vulnerability, prior work proposed both principled defenses…

Machine Learning · Computer Science 2023-06-13 Ruihan Wu , Xiangyu Chen , Chuan Guo , Kilian Q. Weinberger