A Critical Review on the Effectiveness and Privacy Threats of Membership Inference Attacks

Fuente: arXiv
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Hauptverfasser: Jebreel, Najeeb, Sánchez, David, Domingo-Ferrer, Josep
Format: Preprint
Veröffentlicht: 2026
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author Jebreel, Najeeb
Sánchez, David
Domingo-Ferrer, Josep
author_facet Jebreel, Najeeb
Sánchez, David
Domingo-Ferrer, Josep
contents Membership inference attacks (MIAs) aim to determine whether a data sample was included in a machine learning (ML) model's training set and have become the de facto standard for measuring privacy leakages in ML. We propose an evaluation framework that defines the conditions under which MIAs constitute a genuine privacy threat, and review representative MIAs against it. We find that, under the realistic conditions defined in our framework, MIAs represent weak privacy threats. Thus, relying on them as a privacy metric in ML can lead to an overestimation of risk and to unnecessary sacrifices in model utility as a consequence of employing too strong defenses.
format Preprint
id arxiv_https___arxiv_org_abs_2603_22987
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle A Critical Review on the Effectiveness and Privacy Threats of Membership Inference Attacks
Jebreel, Najeeb
Sánchez, David
Domingo-Ferrer, Josep
Cryptography and Security
Machine Learning
Membership inference attacks (MIAs) aim to determine whether a data sample was included in a machine learning (ML) model's training set and have become the de facto standard for measuring privacy leakages in ML. We propose an evaluation framework that defines the conditions under which MIAs constitute a genuine privacy threat, and review representative MIAs against it. We find that, under the realistic conditions defined in our framework, MIAs represent weak privacy threats. Thus, relying on them as a privacy metric in ML can lead to an overestimation of risk and to unnecessary sacrifices in model utility as a consequence of employing too strong defenses.
title A Critical Review on the Effectiveness and Privacy Threats of Membership Inference Attacks
topic Cryptography and Security
Machine Learning
url https://arxiv.org/abs/2603.22987