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Large language models trained on massive corpora of data from the web can memorize and reproduce sensitive or private data raising both legal and ethical concerns. Unlearning, or tuning models to forget information present in their training…

Machine Learning · Computer Science 2024-01-12 Pratyush Maini , Zhili Feng , Avi Schwarzschild , Zachary C. Lipton , J. Zico Kolter

In this paper, we consider privacy aspects of wireless federated learning (FL) with Over-the-Air (OtA) transmission of gradient updates from multiple users/agents to an edge server. By exploiting the waveform superposition property of…

Machine Learning · Computer Science 2022-10-12 Jialing Liao , Zheng Chen , Erik G. Larsson

The privacy vulnerabilities of the federated learning (FL) paradigm, primarily caused by gradient leakage, have prompted the development of various defensive measures. Nonetheless, these solutions have predominantly been crafted for and…

Cryptography and Security · Computer Science 2025-02-10 Abhinav Kumar , George Torres , Noah Guzinski , Gaurav Panwar , Reza Tourani , Satyajayant Misra , Marcin Spoczynski , Mona Vij , Nageen Himayat

In federated learning (FL), a set of participants share updates computed on their local data with an aggregator server that combines updates into a global model. However, reconciling accuracy with privacy and security is a challenge to FL.…

Cryptography and Security · Computer Science 2022-11-22 Najeeb Moharram Jebreel , Josep Domingo-Ferrer , Alberto Blanco-Justicia , David Sanchez

Federated learning (FL) enables clients to collaborate with a server to train a machine learning model. To ensure privacy, the server performs secure aggregation of updates from the clients. Unfortunately, this prevents verification of the…

Cryptography and Security · Computer Science 2022-09-13 Amrita Roy Chowdhury , Chuan Guo , Somesh Jha , Laurens van der Maaten

Federated unlearning (FU) algorithms allow clients in federated settings to exercise their ''right to be forgotten'' by removing the influence of their data from a collaboratively trained model. Existing FU methods maintain data privacy by…

Cryptography and Security · Computer Science 2025-08-12 Samaneh Mohammadi , Vasileios Tsouvalas , Iraklis Symeonidis , Ali Balador , Tanir Ozcelebi , Francesco Flammini , Nirvana Meratnia

Federated learning often suffers from slow and unstable convergence due to the heterogeneous characteristics of participating client datasets. Such a tendency is aggravated when the client participation ratio is low since the information…

Machine Learning · Computer Science 2024-04-02 Geeho Kim , Jinkyu Kim , Bohyung Han

Federated learning (FL) enables collaborative model training by aggregating local updates without requiring raw data sharing. However, prior studies have shown that servers can exploit gradient inversion to compromise user privacy or…

Cryptography and Security · Computer Science 2026-05-26 Yufei Zhou

Federated Learning (FL) enables model training across decentralized devices by communicating solely local model updates to an aggregation server. Although such limited data sharing makes FL more secure than centralized approached, FL…

Cryptography and Security · Computer Science 2024-06-14 Vasileios Tsouvalas , Samaneh Mohammadi , Ali Balador , Tanir Ozcelebi , Francesco Flammini , Nirvana Meratnia

Federated Learning (FL) framework brings privacy benefits to distributed learning systems by allowing multiple clients to participate in a learning task under the coordination of a central server without exchanging their private data.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Zhuohang Li , Jiaxin Zhang , Luyang Liu , Jian Liu

Federated learning (FL) enables multiple clients to train a machine learning model collaboratively without exchanging their local data. Federated unlearning is an inverse FL process that aims to remove a specified target client's…

Machine Learning · Computer Science 2023-02-27 Guanghao Li , Li Shen , Yan Sun , Yue Hu , Han Hu , Dacheng Tao

Federated unlearning (FU) aims to remove a participant's data contributions from a trained federated learning (FL) model, ensuring privacy and regulatory compliance. Traditional FU methods often depend on auxiliary storage on either the…

Machine Learning · Computer Science 2025-03-10 Yasser H. Khalil , Leo Brunswic , Soufiane Lamghari , Xu Li , Mahdi Beitollahi , Xi Chen

Federated learning (FL) enables distributed clients to collaboratively train a machine learning model without sharing raw data with each other. However, it suffers the leakage of private information from uploading models. In addition, as…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-12-25 Kang Wei , Jun Li , Chuan Ma , Ming Ding , Feng Shu , Haitao Zhao , Wen Chen , Hongbo Zhu

In federated learning, multiple parties can cooperate to train the model without directly exchanging their own private data, but the gradient leakage problem still threatens the privacy security and model integrity. Although the existing…

Cryptography and Security · Computer Science 2025-11-18 Minjie Wang , Jinguang Han , Weizhi Meng

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

Federated learning, as a distributed architecture, shows great promise for applications in Cyber-Physical-Social Systems (CPSS). In order to mitigate the privacy risks inherent in CPSS, the integration of differential privacy with federated…

Machine Learning · Computer Science 2025-06-05 Jiayi Wan , Xiang Zhu , Fanzhen Liu , Wei Fan , Xiaolong Xu

Although federated learning improves privacy of training data by exchanging local gradients or parameters rather than raw data, the adversary still can leverage local gradients and parameters to obtain local training data by launching…

Machine Learning · Computer Science 2021-08-17 Xue Yang , Yan Feng , Weijun Fang , Jun Shao , Xiaohu Tang , Shu-Tao Xia , Rongxing Lu

One main challenge in federated learning is the large communication cost of exchanging weight updates from clients to the server at each round. While prior work has made great progress in compressing the weight updates through gradient…

Machine Learning · Computer Science 2023-02-10 Berivan Isik , Francesco Pase , Deniz Gunduz , Tsachy Weissman , Michele Zorzi

Federated learning has quickly gained popularity with its promises of increased user privacy and efficiency. Previous works have shown that federated gradient updates contain information that can be used to approximately recover user data…

Machine Learning · Computer Science 2022-03-21 Liam Fowl , Jonas Geiping , Wojtek Czaja , Micah Goldblum , Tom Goldstein

Federated Learning (FL) faces two major issues: privacy leakage and poisoning attacks, which may seriously undermine the reliability and security of the system. Overcoming them simultaneously poses a great challenge. This is because privacy…

Cryptography and Security · Computer Science 2023-12-05 Yisheng Zhong , Li-Ping Wang