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Recent works have brought attention to the vulnerability of Federated Learning (FL) systems to gradient leakage attacks. Such attacks exploit clients' uploaded gradients to reconstruct their sensitive data, thereby compromising the privacy…

Machine Learning · Computer Science 2025-06-11 Mingyuan Fan , Cen Chen , Chengyu Wang , Xiaodan Li , Wenmeng Zhou

Federated Learning (FL) is a distributed machine learning diagram that enables multiple clients to collaboratively train a global model without sharing their private local data. However, FL systems are vulnerable to attacks that are…

Machine Learning · Computer Science 2024-08-20 Qilei Li , Ahmed M. Abdelmoniem

With heightened awareness of data privacy protection, Federated Learning (FL) has attracted widespread attention as a privacy-preserving distributed machine learning method. However, the distributed nature of federated learning also…

Cryptography and Security · Computer Science 2024-06-03 Xiaoyun Gan , Shanyu Gan , Taizhi Su , Peng Liu

Research on backdoor attacks in Federated Learning (FL) has accelerated in recent years, with new attacks and defenses continually proposed in an escalating arms race. However, the evaluation of these methods remains neither standardized…

Cryptography and Security · Computer Science 2025-11-26 Thinh Dao , Dung Thuy Nguyen , Khoa D Doan , Kok-Seng Wong

Federated learning (FL) allows participants to jointly train a machine learning model without sharing their private data with others. However, FL is vulnerable to poisoning attacks such as backdoor attacks. Consequently, a variety of…

Machine Learning · Computer Science 2023-01-24 Kavita Kumari , Phillip Rieger , Hossein Fereidooni , Murtuza Jadliwala , Ahmad-Reza Sadeghi

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

Federated learning (FL) has been demonstrated to be susceptible to backdoor attacks. However, existing academic studies on FL backdoor attacks rely on a high proportion of real clients with main task-related data, which is impractical. In…

Cryptography and Security · Computer Science 2024-05-07 Minghui Li , Wei Wan , Yuxuan Ning , Shengshan Hu , Lulu Xue , Leo Yu Zhang , Yichen Wang

Multimodal contrastive learning has emerged as a powerful paradigm for building high-quality features using the complementary strengths of various data modalities. However, the open nature of such systems inadvertently increases the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Siyuan Liang , Kuanrong Liu , Jiajun Gong , Jiawei Liang , Yuan Xun , Ee-Chien Chang , Xiaochun Cao

Federated learning (FL) offers a promising paradigm for collaborative model training while preserving data privacy. However, its susceptibility to gradient inversion attacks poses a significant challenge, necessitating robust privacy…

Cryptography and Security · Computer Science 2025-08-19 Xiaojin Zhang , Mingcong Xu , Yiming Li , Wei Chen , Qiang Yang

Federated learning (FL), as a powerful learning paradigm, trains a shared model by aggregating model updates from distributed clients. However, the decoupling of model learning from local data makes FL highly vulnerable to backdoor attacks,…

Cryptography and Security · Computer Science 2025-03-07 Xiyue Zhang , Xiaoyong Xue , Xiaoning Du , Xiaofei Xie , Yang Liu , Meng Sun

Federated learning (FL) enables learning a global machine learning model from local data distributed among a set of participating workers. This makes it possible i) to train more accurate models due to learning from rich joint training…

Machine Learning · Computer Science 2025-11-25 Najeeb Jebreel , Josep Domingo-Ferrer

Recent research efforts indicate that federated learning (FL) systems are vulnerable to a variety of security breaches. While numerous defense strategies have been suggested, they are mainly designed to counter specific attack patterns and…

Cryptography and Security · Computer Science 2025-12-19 Henger Li , Tianyi Xu , Tao Li , Yunian Pan , Quanyan Zhu , Zizhan Zheng

Gradient-based adversarial attacks subtly manipulate inputs of Machine Learning (ML) models to induce incorrect predictions. This paper investigates whether careful architectural choices alone can yield an inherently robust Deep Neural…

Machine Learning · Computer Science 2026-05-19 Mohamed elShehaby , Ashraf Matrawy

Malicious clients can attack federated learning systems using malicious data, including backdoor samples, during the training phase. The compromised global model will perform well on the validation dataset designed for the task, but a small…

Cryptography and Security · Computer Science 2021-01-18 Chen Wu , Xian Yang , Sencun Zhu , Prasenjit Mitra

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), a privacy-preserving decentralized machine learning framework, has been shown to be vulnerable to backdoor attacks. Current research primarily focuses on the Single-Label Backdoor Attack (SBA), wherein adversaries…

Cryptography and Security · Computer Science 2025-03-25 Ye Li , Yanchao Zhao , Chengcheng Zhu , Jiale Zhang

Federated Learning(FL), in theory, preserves privacy of individual clients' data while producing quality machine learning models. However, attacks such as Deep Leakage from Gradients(DLG) severely question the practicality of FL. In this…

Machine Learning · Computer Science 2024-08-19 Joon Kim , Sejin Park

Decentralized federated learning (DFL) is inherently vulnerable to data poisoning attacks, as malicious clients can transmit manipulated gradients to neighboring clients. Existing defense methods either reject suspicious gradients per…

Machine Learning · Computer Science 2025-07-08 Bin Li , Xiaoye Miao , Yan Zhang , Jianwei Yin

Decentralized Federated Learning (DFL), a paradigm for managing big data in a privacy-preserved manner, is still vulnerable to poisoning attacks where malicious clients tamper with data or models. Current defense methods often assume…

Cryptography and Security · Computer Science 2024-11-13 Chao Feng , Alberto Huertas Celdrán , Zien Zeng , Zi Ye , Jan von der Assen , Gerome Bovet , Burkhard Stiller

Federated learning (FL) is a privacy-preserving distributed management framework based on collaborative model training of distributed devices in edge networks. However, recent studies have shown that FL is vulnerable to adversarial examples…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Yu Qiao , Apurba Adhikary , Chaoning Zhang , Choong Seon Hong