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Federated learning enables training high-utility models across several clients without directly sharing their private data. As a downside, the federated setting makes the model vulnerable to various adversarial attacks in the presence of…

Machine Learning · Computer Science 2024-03-12 Xiaoyang Wang , Dimitrios Dimitriadis , Sanmi Koyejo , Shruti Tople

Federated Learning (FL) in 5G and edge network environments face severe security threats from adversarial clients. Malicious participants can perform label flipping, inject backdoor triggers, or launch Sybil attacks to corrupt the global…

Cryptography and Security · Computer Science 2025-09-23 Saeid Sheikhi , Panos Kostakos , Lauri Loven

Federated Learning (FL) remains highly vulnerable to poisoning attacks, especially under real-world hyper-heterogeneity, where clients differ significantly in data distributions, communication capabilities, and model architectures. Such…

Machine Learning · Computer Science 2025-08-07 Weiyao Zhang , Jinyang Li , Qi Song , Miao Wang , Chungang Lin , Haitong Luo , Xuying Meng , Yujun Zhang

Federated learning (FL) allows multiple clients to collaboratively train a global machine learning model through a server, without exchanging their private training data. However, the decentralized aspect of FL makes it susceptible to…

Cryptography and Security · Computer Science 2025-01-30 Minghong Fang , Seyedsina Nabavirazavi , Zhuqing Liu , Wei Sun , Sundararaja Sitharama Iyengar , Haibo Yang

Federated learning combines local updates from clients to produce a global model, which is susceptible to poisoning attacks. Most previous defense strategies relied on vectors derived from projections of local updates on a Euclidean space;…

Machine Learning · Computer Science 2024-04-19 Sungwon Han , Hyeonho Song , Sungwon Park , Meeyoung Cha

Machine learning has become an important component for many systems and applications including computer vision, spam filtering, malware and network intrusion detection, among others. Despite the capabilities of machine learning algorithms…

Machine Learning · Statistics 2018-02-14 Andrea Paudice , Luis Muñoz-González , Andras Gyorgy , Emil C. Lupu

This review paper takes a comprehensive look at malicious attacks against FL, categorizing them from new perspectives on attack origins and targets, and providing insights into their methodology and impact. In this survey, we focus on…

Machine Learning · Computer Science 2024-01-10 Xianghua Xie , Chen Hu , Hanchi Ren , Jingjing Deng

This paper proposes a novel, data-agnostic, model poisoning attack on Federated Learning (FL), by designing a new adversarial graph autoencoder (GAE)-based framework. The attack requires no knowledge of FL training data and achieves both…

Machine Learning · Computer Science 2023-12-01 Kai Li , Jingjing Zheng , Xin Yuan , Wei Ni , Ozgur B. Akan , H. Vincent Poor

The uneven distribution of local data across different edge devices (clients) results in slow model training and accuracy reduction in federated learning. Naive federated learning (FL) strategy and most alternative solutions attempted to…

Recent advancements in Deep Reinforcement Learning (DRL) have demonstrated its applicability across various domains, including robotics, healthcare, energy optimization, and autonomous driving. However, a critical question remains: How…

Machine Learning · Computer Science 2025-07-24 Adithya Mohan , Dominik Rößle , Daniel Cremers , Torsten Schön

Federated learning is vulnerable to poisoning and backdoor attacks under partial observability. We formulate defence as a partially observable sequential decision problem and introduce a trust-aware Deep Q-Network that integrates…

Machine Learning · Computer Science 2025-10-03 Vedant Palit

Federated learning allows multiple clients to collaboratively train a global model with the assistance of a server. However, its distributed nature makes it susceptible to poisoning attacks, where malicious clients can compromise the global…

Cryptography and Security · Computer Science 2025-01-30 Wenbin Wang , Qiwen Ma , Zifan Zhang , Yuchen Liu , Zhuqing Liu , Minghong Fang

In federated learning (FL), although the original intention of available but not visible data is to allay data privacy concerns, it potentially brings new security threats, particularly poisoning attacks that target such not visible local…

Cryptography and Security · Computer Science 2026-03-20 Wei Sun , Bo Gao , Ke Xiong , Yuwei Wang , Pingyi Fan , Khaled Ben Letaief

Distributed learning paradigms, such as federated and decentralized learning, allow for the coordination of models across a collection of agents, and without the need to exchange raw data. Instead, agents compute model updates locally based…

Machine Learning · Computer Science 2022-04-04 Stefan Vlaski , Christian Schroth , Michael Muma , Abdelhak M. Zoubir

Federated learning is a prominent framework that enables clients (e.g., mobile devices or organizations) to train a collaboratively global model under a central server's orchestration while keeping local training datasets' privacy. However,…

Machine Learning · Computer Science 2021-07-20 Farnaz Tahmasebian , Jian Lou , Li Xiong

Availability poisons exploit supervised learning (SL) algorithms by introducing class-related shortcut features in images such that models trained on poisoned data are useless for real-world datasets. Self-supervised learning (SSL), which…

Computer Vision and Pattern Recognition · Computer Science 2024-09-16 Jeremy Styborski , Mingzhi Lyu , Yi Huang , Adams Kong

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), 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

Data-driven deep learning (DL) techniques developed for automatic modulation classification (AMC) of wireless signals are vulnerable to adversarial attacks. This poses a severe security threat to the DL-based wireless systems, specifically…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Nayan Moni Baishya , B. R. Manoj

This paper explores the use of server learning for enhancing the robustness of federated learning against malicious attacks even when clients' training data are not independent and identically distributed. We propose a heuristic algorithm…

Machine Learning · Computer Science 2026-04-06 Van Sy Mai , Kushal Chakrabarti , Richard J. La , Dipankar Maity