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Federated learning is vulnerable to poisoning attacks in which malicious clients poison the global model via sending malicious model updates to the server. Existing defenses focus on preventing a small number of malicious clients from…

Cryptography and Security · Computer Science 2022-10-21 Xiaoyu Cao , Jinyuan Jia , Zaixi Zhang , Neil Zhenqiang Gong

Federated learning (FL) combined with local differential privacy (LDP) enables privacy-preserving model training across decentralized data sources. However, the decentralized data-management paradigm leaves LDPFL vulnerable to participants…

Cryptography and Security · Computer Science 2025-09-08 Zijian Wang , Wei Tong , Tingxuan Han , Haoyu Chen , Tianling Zhang , Yunlong Mao , Sheng Zhong

This paper investigates capabilities of Privacy-Preserving Deep Learning (PPDL) mechanisms against various forms of privacy attacks. First, we propose to quantitatively measure the trade-off between model accuracy and privacy losses…

Machine Learning · Computer Science 2020-06-25 Lixin Fan , Kam Woh Ng , Ce Ju , Tianyu Zhang , Chang Liu , Chee Seng Chan , Qiang Yang

Decentralized learning (DL) offers a novel paradigm in machine learning by distributing training across clients without central aggregation, enhancing scalability and efficiency. However, DL's peer-to-peer model raises challenges in…

Cryptography and Security · Computer Science 2024-04-30 Ali Reza Ghavamipour , Benjamin Zi Hao Zhao , Fatih Turkmen

Federated learning enables learning from decentralized data sources without compromising privacy, which makes it a crucial technique. However, it is vulnerable to model poisoning attacks, where malicious clients interfere with the training…

Cryptography and Security · Computer Science 2023-07-19 Sungwon Park , Sungwon Han , Fangzhao Wu , Sundong Kim , Bin Zhu , Xing Xie , Meeyoung Cha

In large-scale statistical learning, data collection and model fitting are moving increasingly toward peripheral devices---phones, watches, fitness trackers---away from centralized data collection. Concomitant with this rise in…

Machine Learning · Statistics 2019-06-04 Abhishek Bhowmick , John Duchi , Julien Freudiger , Gaurav Kapoor , Ryan Rogers

Privacy attacks on machine learning models aim to identify the data that is used to train such models. Such attacks, traditionally, are studied on static models that are trained once and are accessible by the adversary. Motivated to meet…

Machine Learning · Computer Science 2022-02-09 Ji Gao , Sanjam Garg , Mohammad Mahmoody , Prashant Nalini Vasudevan

Collaborative training of a machine learning model comes with a risk of sharing sensitive or private data. Federated learning offers a way of collectively training a single global model without the need to share client data, by sharing only…

Cryptography and Security · Computer Science 2026-01-09 Damian Harenčák , Lukáš Gajdošech , Martin Madaras

Decentralized learning (DL) is an emerging paradigm of collaborative machine learning that enables nodes in a network to train models collectively without sharing their raw data or relying on a central server. This paper introduces Zip-DL,…

Machine unlearning is motivated by desire for data autonomy: a person can request to have their data's influence removed from deployed models, and those models should be updated as if they were retrained without the person's data. We show…

Machine Learning · Computer Science 2024-05-31 Martin Bertran , Shuai Tang , Michael Kearns , Jamie Morgenstern , Aaron Roth , Zhiwei Steven Wu

Federated learning is known to be vulnerable to both security and privacy issues. Existing research has focused either on preventing poisoning attacks from users or on concealing the local model updates from the server, but not both.…

Machine Learning · Computer Science 2024-06-05 Truc Nguyen , My T. Thai

Reconstruction attacks against federated learning (FL) aim to reconstruct users' samples through users' uploaded gradients. Local differential privacy (LDP) is regarded as an effective defense against various attacks, including sample…

Cryptography and Security · Computer Science 2025-02-13 Zhichao You , Xuewen Dong , Shujun Li , Ximeng Liu , Siqi Ma , Yulong Shen

These days, deep learning models have achieved great success in multiple fields, from autonomous driving to medical diagnosis. These models have expanded the abilities of artificial intelligence by offering great solutions to complex…

Cryptography and Security · Computer Science 2023-11-27 Gopichandh Golla

Local differential privacy (LDP), which enables an untrusted server to collect aggregated statistics from distributed users while protecting the privacy of those users, has been widely deployed in practice. However, LDP protocols for…

Cryptography and Security · Computer Science 2024-07-11 Xinyue Sun , Qingqing Ye , Haibo Hu , Jiawei Duan , Tianyu Wo , Jie Xu , Renyu Yang

The distributed nature of local differential privacy (LDP) invites data poisoning attacks and poses unforeseen threats to the underlying LDP-supported applications. In this paper, we propose a comprehensive mitigation framework for popular…

Cryptography and Security · Computer Science 2025-06-18 Xiaolin Li , Ninghui Li , Boyang Wang , Wenhai Sun

Federated learning (FL) has become an emerging machine learning technique lately due to its efficacy in safeguarding the client's confidential information. Nevertheless, despite the inherent and additional privacy-preserving mechanisms…

Cryptography and Security · Computer Science 2021-09-22 Md Tamjid Hossain , Shafkat Islam , Shahriar Badsha , Haoting Shen

Healthcare is one of the foremost applications of machine learning (ML). Traditionally, ML models are trained by central servers, which aggregate data from various distributed devices to forecast the results for newly generated data. This…

Machine Learning · Computer Science 2023-10-12 Sankalp Vyas , Amar Nath Patra , Raj Mani Shukla

Federated Learning (FL) enables collaborative training of machine learning models across distributed clients without sharing raw data, ostensibly preserving data privacy. Nevertheless, recent studies have revealed critical vulnerabilities…

Machine Learning · Computer Science 2025-09-08 Francesco Diana , André Nusser , Chuan Xu , Giovanni Neglia

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

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
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