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While prior work has shown that Federated Learning updates can leak sensitive information, label reconstruction attacks, which aim to recover input labels from shared gradients, have not yet been examined in the context of Human Activity…

Machine Learning · Computer Science 2025-08-08 Marius Bock , Maximilian Hopp , Kristof Van Laerhoven , Michael Moeller

Split learning enables collaborative deep learning model training while preserving data privacy and model security by avoiding direct sharing of raw data and model details (i.e., sever and clients only hold partial sub-networks and exchange…

Machine Learning · Computer Science 2023-07-19 Mingyuan Fan , Cen Chen , Chengyu Wang , Wenmeng Zhou , Jun Huang

Real-world data is usually segmented by attributes and distributed across different parties. Federated learning empowers collaborative training without exposing local data or models. As we demonstrate through designed attacks, even with a…

Machine Learning · Computer Science 2021-04-30 Shuang Zhang , Liyao Xiang , Xi Yu , Pengzhi Chu , Yingqi Chen , Chen Cen , Li Wang

Split Learning (SL) is a collaborative learning approach that improves privacy by keeping data on the client-side while sharing only the intermediate output with a server. However, the distributed nature of SL introduces new security…

Machine Learning · Computer Science 2025-08-15 Tanveer Khan , Antonis Michalas

Federated learning enables collaborative training of machine learning models by keeping the raw data of the involved workers private. Three of its main objectives are to improve the models' privacy, security, and scalability. Vertical…

Machine Learning · Computer Science 2024-04-19 Marco Arazzi , Mauro Conti , Stefanos Koffas , Marina Krcek , Antonino Nocera , Stjepan Picek , Jing Xu

The gradient inversion attack has been demonstrated as a significant privacy threat to federated learning (FL), particularly in continuous domains such as vision models. In contrast, it is often considered less effective or highly dependent…

Machine Learning · Computer Science 2025-07-30 Xinguo Feng , Zhongkui Ma , Zihan Wang , Eu Joe Chegne , Mengyao Ma , Alsharif Abuadbba , Guangdong Bai

Federated Learning (FL) enables collaborative model training while preserving data privacy by keeping raw data locally stored on client devices, preventing access from other clients or the central server. However, recent studies reveal that…

Cryptography and Security · Computer Science 2025-09-26 Ren-Yi Huang , Dumindu Samaraweera , Prashant Shekhar , J. Morris Chang

Split Learning (SL) has emerged as a practical and efficient alternative to traditional federated learning. While previous attempts to attack SL have often relied on overly strong assumptions or targeted easily exploitable models, we seek…

Cryptography and Security · Computer Science 2025-03-25 Xiaochen Zhu , Xinjian Luo , Yuncheng Wu , Yangfan Jiang , Xiaokui Xiao , Beng Chin Ooi

Federated Graph Neural Networks (FedGNNs) facilitate collaborative learning across multiple clients with graph-structured data while preserving user privacy. However, emerging research indicates that within this setting, shared model…

Machine Learning · Computer Science 2026-05-08 Suprim Nakarmi , Junggab Son , Yue Zhao , Zuobin Xiong

Federated Learning (FL) exhibits privacy vulnerabilities under gradient inversion attacks (GIAs), which can extract private information from individual gradients. To enhance privacy, FL incorporates Secure Aggregation (SA) to prevent the…

Cryptography and Security · Computer Science 2024-06-25 Zhibo Wang , Zhiwei Chang , Jiahui Hu , Xiaoyi Pang , Jiacheng Du , Yongle Chen , Kui Ren

Vertical Federated Learning (VFL) has emerged as a promising paradigm for collaborative model training across distributed feature spaces, which enables privacy-preserving learning without sharing raw data. However, recent studies have…

Cryptography and Security · Computer Science 2026-04-14 Zeyu Yan , Yanfei Yao , Xuanbing Wen , Shixiong Zhang , Juli Zhang , Kai Fan

This paper studies model-inversion attacks, in which the access to a model is abused to infer information about the training data. Since its first introduction, such attacks have raised serious concerns given that training data usually…

Machine Learning · Computer Science 2020-04-21 Yuheng Zhang , Ruoxi Jia , Hengzhi Pei , Wenxiao Wang , Bo Li , Dawn Song

Machine learning systems deployed in distributed or federated environments are highly susceptible to adversarial manipulations, particularly availability attacks -adding imperceptible perturbations to training data, thereby rendering the…

Cryptography and Security · Computer Science 2025-06-02 Abdessamad El-Kabid , El-Mahdi El-Mhamdi

Federated learning reduces the risk of information leakage, but remains vulnerable to attacks. We investigate how several neural network design decisions can defend against gradients inversion attacks. We show that overlapping gradients…

Machine Learning · Computer Science 2022-04-28 Shaltiel Eloul , Fran Silavong , Sanket Kamthe , Antonios Georgiadis , Sean J. Moran

Federated Learning (FL) has emerged as a machine learning approach able to preserve the privacy of user's data. Applying FL, clients train machine learning models on a local dataset and a central server aggregates the learned parameters…

Cryptography and Security · Computer Science 2024-09-27 Luiz Leite , Yuri Santo , Bruno L. Dalmazo , André Riker

This paper investigates a class of attacks targeting the confidentiality aspect of security in Deep Reinforcement Learning (DRL) policies. Recent research have established the vulnerability of supervised machine learning models (e.g.,…

Machine Learning · Computer Science 2019-06-05 Vahid Behzadan , William Hsu

The growing concern over data privacy, the benefits of utilizing data from diverse sources for model training, and the proliferation of networked devices with enhanced computational capabilities have all contributed to the rise of federated…

Machine Learning · Computer Science 2024-12-18 Rui Zhang , Ka-Ho Chow , Ping Li

Data privacy has become an increasingly important issue in Machine Learning (ML), where many approaches have been developed to tackle this challenge, e.g. cryptography (Homomorphic Encryption (HE), Differential Privacy (DP), etc.) and…

Machine Learning · Computer Science 2022-09-13 Hanchi Ren , Jingjing Deng , Xianghua Xie

Deep regression networks are widely used to tackle the problem of predicting a continuous value for a given input. Task-specialized approaches for training regression networks have shown significant improvement over generic approaches, such…

Machine Learning · Computer Science 2023-03-07 Deval Shah , Tor M. Aamodt

Federated learning has emerged as a prominent privacy-preserving technique for leveraging large-scale distributed datasets by sharing gradients instead of raw data. However, recent studies indicate that private training data can still be…

Cryptography and Security · Computer Science 2025-09-30 Tamer Ahmed Eltaras , Qutaibah Malluhi , Alessandro Savino , Stefano Di Carlo , Adnan Qayyum