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Federated Learning (FL) enables collaborative model training without centralizing client data, making it attractive for privacy-sensitive domains. While existing approaches employ cryptographic techniques such as homomorphic encryption,…

Cryptography and Security · Computer Science 2026-02-09 Sahar Ghoflsaz Ghinani , Elaheh Sadredini

Federated learning (FL) is a kind of distributed machine learning framework, where the global model is generated on the centralized aggregation server based on the parameters of local models, addressing concerns about privacy leakage caused…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-08-22 Chenhao Xu , Youyang Qu , Yong Xiang , Longxiang Gao

Existing approaches defend against backdoor attacks in federated learning (FL) mainly through a) mitigating the impact of infected models, or b) excluding infected models. The former negatively impacts model accuracy, while the latter…

Machine Learning · Computer Science 2024-05-21 Zhen Qin , Feiyi Chen , Chen Zhi , Xueqiang Yan , Shuiguang Deng

Anomaly detection is crucial in the energy sector to identify irregular patterns indicating equipment failures, energy theft, or other issues. Machine learning techniques for anomaly detection have achieved great success, but are typically…

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 (FL) is an emerging paradigm for facilitating multiple organizations' data collaboration without revealing their private data to each other. Recently, vertical FL, where the participating organizations hold the same set…

Machine Learning · Computer Science 2022-07-15 Xinjian Luo , Yuncheng Wu , Xiaokui Xiao , Beng Chin Ooi

Federated Learning (FL) is a distributed, and decentralized machine learning protocol. By executing FL, a set of agents can jointly train a model without sharing their datasets with each other, or a third-party. This makes FL particularly…

Cryptography and Security · Computer Science 2020-10-16 Harsh Bimal Desai , Mustafa Safa Ozdayi , Murat Kantarcioglu

Federated Contrastive Learning (FCL) represents a burgeoning approach for learning from decentralized unlabeled data while upholding data privacy. In FCL, participant clients collaborate in learning a global encoder using unlabeled data,…

Cryptography and Security · Computer Science 2024-04-29 Kongyang Chen , Wenfeng Wang , Zixin Wang , Wangjun Zhang , Zhipeng Li , Yao Huang

Federated learning (FL) emerged as a popular distributed algorithm to train machine learning models on edge devices while preserving data privacy. However, FL systems face challenges due to client-side computational constraints and from a…

Machine Learning · Computer Science 2026-03-26 Omar Bekdache , Naresh Shanbhag

Federated learning (FL) is a popular distributed learning framework that trains a global model through iterative communications between a central server and edge devices. Recent works have demonstrated that FL is vulnerable to model…

Machine Learning · Computer Science 2021-10-27 Jingwei Sun , Ang Li , Louis DiValentin , Amin Hassanzadeh , Yiran Chen , Hai Li

Federated learning (FL) offers a solution to train a global machine learning model while still maintaining data privacy, without needing access to data stored locally at the clients. However, FL suffers performance degradation when client…

Machine Learning · Computer Science 2021-08-13 Zihan Chen , Kai Fong Ernest Chong , Tony Q. S. Quek

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,…

Machine Learning · Computer Science 2024-11-22 Yijiang Li , Ying Gao , Haohan Wang

The decentralized nature of federated learning makes detecting and defending against adversarial attacks a challenging task. This paper focuses on backdoor attacks in the federated learning setting, where the goal of the adversary is to…

Machine Learning · Computer Science 2019-12-04 Ziteng Sun , Peter Kairouz , Ananda Theertha Suresh , H. Brendan McMahan

Federated Learning (FL) enables collaborative model training across multiple clients without sharing private data. We consider FL scenarios wherein FL clients are subject to adversarial (Byzantine) attacks, while the FL server is trusted…

Machine Learning · Computer Science 2026-04-30 Emmanouil Kritharakis , Dusan Jakovetic , Antonios Makris , Konstantinos Tserpes

Federated Learning (FL) enables multiple parties to train machine learning models collaboratively without sharing the raw training data. However, the federated nature of FL enables malicious clients to influence a trained model by injecting…

Machine Learning · Computer Science 2025-07-02 Sheldon C. Ebron , Meiying Zhang , Kan Yang

Adversarial Training (AT) is crucial for obtaining deep neural networks that are robust to adversarial attacks, yet recent works found that it could also make models more vulnerable to privacy attacks. In this work, we further reveal this…

Machine Learning · Computer Science 2022-02-23 Jingyang Zhang , Yiran Chen , Hai Li

Federated Learning (FL) refers to learning a high quality global model based on decentralized data storage, without ever copying the raw data. A natural scenario arises with data created on mobile phones by the activity of their users.…

Machine Learning · Computer Science 2023-01-19 Yihan Jiang , Jakub Konečný , Keith Rush , Sreeram Kannan

Federated Learning (FL) is a paradigm in Machine Learning (ML) that addresses data privacy, security, access rights and access to heterogeneous information issues by training a global model using distributed nodes. Despite its advantages,…

Cryptography and Security · Computer Science 2022-01-19 Ranwa Al Mallah , David Lopez , Godwin Badu Marfo , Bilal Farooq

Modern defenses against cyberattacks increasingly rely on proactive approaches, e.g., to predict the adversary's next actions based on past events. Building accurate prediction models requires knowledge from many organizations; alas, this…

Cryptography and Security · Computer Science 2022-09-08 Mohammad Naseri , Yufei Han , Enrico Mariconti , Yun Shen , Gianluca Stringhini , Emiliano De Cristofaro

Federated Learning (FL) is a collaborative learning paradigm enabling participants to collectively train a shared machine learning model while preserving the privacy of their sensitive data. Nevertheless, the inherent decentralized and…

Cryptography and Security · Computer Science 2024-04-08 K Naveen Kumar , C Krishna Mohan , Aravind Machiry