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Deep learning models have an intrinsic privacy issue as they memorize parts of their training data, creating a privacy leakage. Membership Inference Attacks (MIA) exploit it to obtain confidential information about the data used for…

Cryptography and Security · Computer Science 2025-03-13 Daniel Jiménez-López , Nuria Rodríguez-Barroso , M. Victoria Luzón , Francisco Herrera

As a long-term threat to the privacy of training data, membership inference attacks (MIAs) emerge ubiquitously in machine learning models. Existing works evidence strong connection between the distinguishability of the training and testing…

Machine Learning · Computer Science 2022-07-14 Dingfan Chen , Ning Yu , Mario Fritz

Large language models (LLMs) are increasingly deployed in interactive and retrieval-augmented settings, raising significant privacy concerns. While attacks such as Membership Inference (MIA), Attribute Inference (AIA), Data Extraction…

Cryptography and Security · Computer Science 2026-05-05 Karima Makhlouf , Lamiaa Basyoni , Syed Khaderi , Gabriel Marquez , Peter Sotomango , Mahmoud Awawdah , Sami Zhioua

Membership Inference Attack (MIA) identifies whether a record exists in a machine learning model's training set by querying the model. MIAs on the classic classification models have been well-studied, and recent works have started to…

Machine Learning · Computer Science 2024-12-30 Wenjie Fu , Huandong Wang , Liyuan Zhang , Chen Gao , Yong Li , Tao Jiang

In the age of agentic AI, the growing deployment of multi-modal models (MMs) has introduced new attack vectors that can leak sensitive training data in MMs, causing privacy leakage. This paper investigates a black-box privacy attack, i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 David Amebley , Sayanton Dibbo

Membership Inference Attacks (MIAs) aim to estimate whether a specific data point was used in the training of a given model. Existing state-of-the-art attacks typically rely on training multiple reference models to approximate the…

Machine Learning · Computer Science 2026-05-26 Zhenlong Liu , Wenyu Jiang , Feng Zhou , Hongxin Wei

As large language models (LLMs) are trained on increasingly opaque corpora, membership inference attacks (MIAs) have been proposed to audit whether copyrighted texts were used during training, despite growing concerns about their…

Cryptography and Security · Computer Science 2026-01-21 Murat Bilgehan Ertan , Emirhan Böge , Min Chen , Kaleel Mahmood , Marten van Dijk

Large vision-language models (LVLMs) have demonstrated outstanding performance in many downstream tasks. However, LVLMs are trained on large-scale datasets, which can pose privacy risks if training images contain sensitive information.…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Zongyu Wu , Minhua Lin , Zhiwei Zhang , Fali Wang , Xianren Zhang , Xiang Zhang , Suhang Wang

This paper presents how to leak private information from a wireless signal classifier by launching an over-the-air membership inference attack (MIA). As machine learning (ML) algorithms are used to process wireless signals to make decisions…

Signal Processing · Electrical Eng. & Systems 2020-06-26 Yi Shi , Kemal Davaslioglu , Yalin E. Sagduyu

Membership Inference Attacks (MIAs) serve as a fundamental auditing tool for evaluating training data leakage in machine learning models. However, existing methodologies predominantly rely on static, handcrafted heuristics that lack…

Cryptography and Security · Computer Science 2026-04-02 Ruhao Liu , Weiqi Huang , Qi Li , Xinchao Wang

Machine Learning (ML) has made unprecedented progress in the past several decades. However, due to the memorability of the training data, ML is susceptible to various attacks, especially Membership Inference Attacks (MIAs), the objective of…

Machine Learning · Computer Science 2022-05-16 Shuhao Li , Yajie Wang , Yuanzhang Li , Yu-an Tan

Membership Inference Attacks (MIAs) aim to identify specific data samples within the private training dataset of machine learning models, leading to serious privacy violations and other sophisticated threats. Many practical black-box MIAs…

Machine Learning · Computer Science 2023-10-13 Jihye Choi , Shruti Tople , Varun Chandrasekaran , Somesh Jha

Large Language Models (LLMs) are increasingly used in a variety of applications, but concerns around membership inference have grown in parallel. Previous efforts focus on black-to-grey-box models, thus neglecting the potential benefit from…

Cryptography and Security · Computer Science 2025-01-13 Luis Ibanez-Lissen , Lorena Gonzalez-Manzano , Jose Maria de Fuentes , Nicolas Anciaux , Joaquin Garcia-Alfaro

Federated Large Language Models (FedLLMs) enable multiple parties to collaboratively fine-tune LLMs without sharing raw data, addressing challenges of limited resources and privacy concerns. Despite data localization, shared gradients can…

Machine Learning · Computer Science 2026-04-24 Guilin Deng , Silong Chen , Yuchuan Luo , Yi Liu , Songlei Wang , Zhiping Cai , Lin Liu , Xiaohua Jia , Shaojing Fu

Diffusion models have achieved remarkable progress in image generation, but their increasing deployment raises serious concerns about privacy. In particular, fine-tuned models are highly vulnerable, as they are often fine-tuned on small and…

Cryptography and Security · Computer Science 2026-01-30 Puwei Lian , Yujun Cai , Songze Li , Bingkun Bao

The widespread collection and sharing of location data, even in aggregated form, raises major privacy concerns. Previous studies used meta-classifier-based membership inference attacks~(MIAs) with multi-layer perceptrons~(MLPs) to estimate…

Cryptography and Security · Computer Science 2024-12-31 Yuhan Liu , Florent Guepin , Igor Shilov , Yves-Alexandre De Montjoye

The increasing prominence of deep learning applications and reliance on personalized data underscore the urgent need to address privacy vulnerabilities, particularly Membership Inference Attacks (MIAs). Despite numerous MIA studies,…

Machine Learning · Computer Science 2024-07-02 Chenxi Li , Abhinav Kumar , Zhen Guo , Jie Hou , Reza Tourani

Large Language Models (LLMs) and Vision-Language Models (VLMs) have made significant advancements in a wide range of natural language processing and vision-language tasks. Access to large web-scale datasets has been a key factor in their…

Machine Learning · Computer Science 2024-10-18 Jie Ren , Kangrui Chen , Chen Chen , Vikash Sehwag , Yue Xing , Jiliang Tang , Lingjuan Lyu

Membership Inference Attacks (MIAs) pose a critical privacy threat by enabling adversaries to determine whether a specific sample was included in a model's training dataset. Despite extensive research on MIAs, systematic comparisons between…

Cryptography and Security · Computer Science 2025-10-21 Owais Makroo , Siva Rajesh Kasa , Sumegh Roychowdhury , Karan Gupta , Nikhil Pattisapu , Santhosh Kasa , Sumit Negi

Large language models (LLMs) have achieved remarkable success and are widely adopted for diverse applications. However, fine-tuning these models often involves private or sensitive information, raising critical privacy concerns. In this…

Cryptography and Security · Computer Science 2025-06-13 Kaiyuan Zhang , Siyuan Cheng , Hanxi Guo , Yuetian Chen , Zian Su , Shengwei An , Yuntao Du , Charles Fleming , Ashish Kundu , Xiangyu Zhang , Ninghui Li