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Federated Learning (FL) protects data privacy while providing a decentralized method for training models. However, because of the distributed schema, it is susceptible to adversarial clients that could alter results or sabotage model…

Cryptography and Security · Computer Science 2025-06-23 Likhitha Annapurna Kavuri , Akshay Mhatre , Akarsh K Nair , Deepti Gupta

Federated learning (FL) has garnered significant attention as a prominent privacy-preserving Machine Learning (ML) paradigm. Decentralized FL (DFL) eschews traditional FL's centralized server architecture, enhancing the system's robustness…

Machine Learning · Computer Science 2025-02-10 Chao Feng , Yunlong Li , Yuanzhe Gao , Alberto Huertas Celdrán , Jan von der Assen , Gérôme Bovet , Burkhard Stiller

One of the key advantages of Federated Learning (FL) is its ability to collaboratively train a Machine Learning (ML) model while keeping clients' data on-site. However, this can create a false sense of security. Despite not sharing private…

Cryptography and Security · Computer Science 2026-05-26 Vincenzo Carletti , Pasquale Foggia , Carlo Mazzocca , Giuseppe Parrella , Mario Vento

Federated learning, as a distributed learning that conducts the training on the local devices without accessing to the training data, is vulnerable to Byzatine poisoning adversarial attacks. We argue that the federated learning model has to…

Machine Learning · Computer Science 2022-09-20 Nuria Rodríguez-Barroso , Eugenio Martínez-Cámara , M. Victoria Luzón , Francisco Herrera

Federated Learning (FL) has emerged as a compelling paradigm for privacy-preserving distributed machine learning, allowing multiple clients to collaboratively train a global model by transmitting locally computed gradients to a central…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Hao Fang , Wenbo Yu , Bin Chen , Xuan Wang , Shu-Tao Xia , Qing Liao , Ke Xu

Federated Learning (FL) enables privacy-preserving multi-source information fusion (MSIF) but is challenged by client drift in highly heterogeneous data settings. Many existing drift-mitigation strategies rely on reference-based…

Machine Learning · Computer Science 2026-02-12 Jungwon Seo , Ferhat Ozgur Catak , Chunming Rong , Kibeom Hong , Minhoe Kim

Federated learning (FL) is a collaborative learning paradigm allowing multiple clients to jointly train a model without sharing their training data. However, FL is susceptible to poisoning attacks, in which the adversary injects manipulated…

Cryptography and Security · Computer Science 2024-01-17 Hossein Fereidooni , Alessandro Pegoraro , Phillip Rieger , Alexandra Dmitrienko , Ahmad-Reza Sadeghi

Deep Neural Network (DNN) models have vulnerabilities related to security concerns, with attackers usually employing complex hacking techniques to expose their structures. Data poisoning-enabled perturbation attacks are complex adversarial…

Computer Vision and Pattern Recognition · Computer Science 2020-12-10 Mohammed Hassanin , Ibrahim Radwan , Nour Moustafa , Murat Tahtali , Neeraj Kumar

Federated Learning (FL), a distributed machine learning paradigm, has been adapted to mitigate privacy concerns for customers. Despite their appeal, there are various inference attacks that can exploit shared-plaintext model updates to…

Cryptography and Security · Computer Science 2022-07-20 Hua Ma , Qun Li , Yifeng Zheng , Zhi Zhang , Xiaoning Liu , Yansong Gao , Said F. Al-Sarawi , Derek Abbott

Federated Learning (FL) can be vulnerable to attacks, such as model poisoning, where adversaries send malicious local weights to compromise the global model. Federated Unlearning (FU) is emerging as a solution to address such…

Machine Learning · Computer Science 2025-08-20 Nicolò Romandini , Cristian Borcea , Rebecca Montanari , Luca Foschini

Federated Learning (FL) is a decentralized machine learning method that enables participants to collaboratively train a model without sharing their private data. Despite its privacy and scalability benefits, FL is susceptible to backdoor…

Cryptography and Security · Computer Science 2024-09-11 Yujie Zhang , Neil Gong , Michael K. Reiter

Due to its distributed nature, federated learning is vulnerable to poisoning attacks, in which malicious clients poison the training process via manipulating their local training data and/or local model updates sent to the cloud server,…

Cryptography and Security · Computer Science 2022-10-05 Xiaoyu Cao , Zaixi Zhang , Jinyuan Jia , Neil Zhenqiang Gong

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 (FL) enables multiple clients to collaboratively train models without sharing their local data, and becomes an important privacy-preserving machine learning framework. However, classical FL faces serious security and…

Cryptography and Security · Computer Science 2023-07-27 Jingwei Yi , Fangzhao Wu , Huishuai Zhang , Bin Zhu , Tao Qi , Guangzhong Sun , Xing Xie

Federated learning (FL) enables distributed clients to collaboratively train a global model using local private data. Nevertheless, recent studies show that conventional FL algorithms still exhibit deficiencies in privacy protection, and…

Cryptography and Security · Computer Science 2026-03-31 Ruiyang Wang , Rong Pan , Zhengan Yao

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

The privacy-preserving federated learning schemes based on the setting of two honest-but-curious and non-colluding servers offer promising solutions in terms of security and efficiency. However, our investigation reveals that these schemes…

Cryptography and Security · Computer Science 2025-07-31 Jiahui Wu , Fucai Luo , Tiecheng Sun , Haiyan Wang , Weizhe Zhang

Data poisoning attacks aim at manipulating model behaviors through distorting training data. Previously, an aggregation-based certified defense, Deep Partition Aggregation (DPA), was proposed to mitigate this threat. DPA predicts through an…

Machine Learning · Computer Science 2022-07-15 Wenxiao Wang , Alexander Levine , Soheil Feizi

Federated Learning (FL) allows multiple clients to collaboratively train a Neural Network (NN) model on their private data without revealing the data. Recently, several targeted poisoning attacks against FL have been introduced. These…

Cryptography and Security · Computer Science 2022-01-04 Phillip Rieger , Thien Duc Nguyen , Markus Miettinen , Ahmad-Reza Sadeghi

In Federated Learning (FL), clients share gradients with a central server while keeping their data local. However, malicious servers could deliberately manipulate the models to reconstruct clients' data from shared gradients, posing…

Cryptography and Security · Computer Science 2025-04-11 Kunlan Xiang , Haomiao Yang , Meng Hao , Shaofeng Li , Haoxin Wang , Zikang Ding , Wenbo Jiang , Tianwei Zhang