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Federated learning (FL) is a popular approach to facilitate privacy-aware machine learning since it allows multiple clients to collaboratively train a global model without granting others access to their private data. It is, however, known…

Cryptography and Security · Computer Science 2023-10-03 Hongsheng Hu , Xuyun Zhang , Zoran Salcic , Lichao Sun , Kim-Kwang Raymond Choo , Gillian Dobbie

Model Inversion Attacks (MIAs) pose a significant threat to data privacy by reconstructing sensitive training samples from the knowledge embedded in trained machine learning models. Despite recent progress in enhancing the effectiveness of…

Cryptography and Security · Computer Science 2025-12-03 Hongyao Yu , Yixiang Qiu , Hao Fang , Tianqu Zhuang , Bin Chen , Sijin Yu , Bin Wang , Shu-Tao Xia , Ke Xu

A membership inference attack (MIA) against a machine-learning model enables an attacker to determine whether a given data record was part of the model's training data or not. In this paper, we provide an in-depth study of the phenomenon of…

Machine Learning · Computer Science 2021-09-20 Bogdan Kulynych , Mohammad Yaghini , Giovanni Cherubin , Michael Veale , Carmela Troncoso

Diffusion models have achieved tremendous success in image generation, but they also raise significant concerns regarding privacy and copyright issues. Membership Inference Attacks (MIAs) are designed to ascertain whether specific data was…

Cryptography and Security · Computer Science 2026-05-29 Puwei Lian , Yujun Cai , Songze Li , Bingkun Bao

Differentially private training algorithms provide protection against one of the most popular attacks in machine learning: the membership inference attack. However, these privacy algorithms incur a loss of the model's classification…

Cryptography and Security · Computer Science 2021-10-13 Jiaxiang Liu , Simon Oya , Florian Kerschbaum

Today, the training of large language models (LLMs) can involve personally identifiable information and copyrighted material, incurring dataset misuse. To mitigate the problem of dataset misuse, this paper explores \textit{dataset…

Cryptography and Security · Computer Science 2025-12-09 Ruikai Zhou , Kang Yang , Xun Chen , Wendy Hui Wang , Guanhong Tao , Jun Xu

Membership Inference Attacks (MIAs) have emerged as a valuable framework for evaluating privacy leakage by machine learning models. Score-based MIAs are distinguished, in particular, by their ability to exploit the confidence scores that…

Machine Learning · Computer Science 2025-02-28 Gauri Pradhan , Joonas Jälkö , Marlon Tobaben , Antti Honkela

While in-processing fairness approaches show promise in mitigating biased predictions, their potential impact on privacy leakage remains under-explored. We aim to address this gap by assessing the privacy risks of fairness-enhanced binary…

Machine Learning · Computer Science 2025-05-29 Huan Tian , Guangsheng Zhang , Bo Liu , Tianqing Zhu , Ming Ding , Wanlei Zhou

CPU-based trusted execution environments (TEEs) and differential privacy (DP) have gained wide applications for private inference. Due to high inference latency in TEEs, researchers use partition-based approaches that offload linear model…

Cryptography and Security · Computer Science 2025-09-12 Honglan Yu , Yibin Wang , Feifei Dai , Dong Liu , Haihui Fan , Xiaoyan Gu

Optimization algorithms that seek flatter minima, such as Sharpness-Aware Minimization (SAM), are credited with improved generalization and robustness to noise. We ask whether such gains impact membership privacy. Surprisingly, we find that…

Machine Learning · Computer Science 2026-01-29 Young In Kim , Andrea Agiollo , Pratiksha Agrawal , Johannes O. Royset , Rajiv Khanna

The state-of-the-art for membership inference attacks on machine learning models is a class of attacks based on shadow models that mimic the behavior of the target model on subsets of held-out nonmember data. However, we find that this…

Machine Learning · Computer Science 2025-10-28 Pratiksha Thaker , Neil Kale , Zhiwei Steven Wu , Virginia Smith

Membership inference attacks (MIA) try to detect if data samples were used to train a neural network model, e.g. to detect copyright abuses. We show that models with higher dimensional input and output are more vulnerable to MIA, and…

Machine Learning · Computer Science 2021-08-19 Avital Shafran , Shmuel Peleg , Yedid Hoshen

The primary promise of decentralized learning is to allow users to engage in the training of machine learning models in a collaborative manner while keeping their data on their premises and without relying on any central entity. However,…

Machine Learning · Computer Science 2025-11-14 Ousmane Touat , Jezekael Brunon , Yacine Belal , Julien Nicolas , César Sabater , Mohamed Maouche , Sonia Ben Mokhtar

Membership inference (MI) attacks affect user privacy by inferring whether given data samples have been used to train a target learning model, e.g., a deep neural network. There are two types of MI attacks in the literature, i.e., these…

Cryptography and Security · Computer Science 2022-08-17 Bo Hui , Yuchen Yang , Haolin Yuan , Philippe Burlina , Neil Zhenqiang Gong , Yinzhi Cao

Membership inference attacks (MIAs) against machine learning models can lead to serious privacy risks for the training dataset used in the model training. In this paper, we propose a novel and effective Neuron-Guided Defense method named…

Cryptography and Security · Computer Science 2022-12-14 Nuo Xu , Binghui Wang , Ran Ran , Wujie Wen , Parv Venkitasubramaniam

Membership Inference Attacks (MIAs) are widely used to quantify training data memorization and assess privacy risks. Standard evaluation requires repeated retraining, which is computationally costly for large models. One-run methods (single…

Machine Learning · Computer Science 2026-02-06 Mathieu Even , Clément Berenfeld , Linus Bleistein , Tudor Cebere , Julie Josse , Aurélien Bellet

Large Language Models (LLMs) are trained on large-scale web data, which makes it difficult to grasp the contribution of each text. This poses the risk of leaking inappropriate data such as benchmarks, personal information, and copyrighted…

Computation and Language · Computer Science 2024-04-18 Masahiro Kaneko , Youmi Ma , Yuki Wata , Naoaki Okazaki

Membership inference attacks (MIA) can reveal whether a particular data point was part of the training dataset, potentially exposing sensitive information about individuals. This article provides theoretical guarantees by exploring the…

Machine Learning · Statistics 2025-10-08 Eric Aubinais , Elisabeth Gassiat , Pablo Piantanida

Diffusion-based generative models have shown great potential for image synthesis, but there is a lack of research on the security and privacy risks they may pose. In this paper, we investigate the vulnerability of diffusion models to…

Computer Vision and Pattern Recognition · Computer Science 2023-05-31 Jinhao Duan , Fei Kong , Shiqi Wang , Xiaoshuang Shi , Kaidi Xu

Synthetic tabular data has gained attention for enabling privacy-preserving data sharing. While substantial progress has been made in single-table synthetic generation where data are modeled at the row or item level, most real-world data…

Machine Learning · Computer Science 2026-05-12 Joshua Ward , Chi-Hua Wang , Guang Cheng