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We present the first systematic Membership Inference Attack (MIA) evaluation of Large Audio Language Models (LALMs). As audio encodes non-semantic information, it induces severe train and test distribution shifts and can lead to spurious…

Sound · Computer Science 2026-03-31 Jia-Kai Dong , Yu-Xiang Lin , Hung-Yi Lee

Large Language Models (LLMs) utilize large amounts of data for their training, some of which may come from copyrighted sources. Membership Inference Attacks (MIA) aim to detect those documents and whether they have been included in the…

Artificial Intelligence · Computer Science 2026-04-22 Juliusz Janicki , Savvas Chamezopoulos , Evangelos Kanoulas , Georgios Tsatsaronis

With the widespread adoption of Large Language Models (LLMs) and increasingly stringent privacy regulations, protecting data privacy in LLMs has become essential, especially for privacy-sensitive applications. Membership Inference Attacks…

Cryptography and Security · Computer Science 2026-01-30 Md Tasnim Jawad , Mingyan Xiao , Yanzhao Wu

Large vision-language models (VLLMs) exhibit promising capabilities for processing multi-modal tasks across various application scenarios. However, their emergence also raises significant data security concerns, given the potential…

Computer Vision and Pattern Recognition · Computer Science 2024-11-06 Zhan Li , Yongtao Wu , Yihang Chen , Francesco Tonin , Elias Abad Rocamora , Volkan Cevher

Large language models (LLMs) based recommender systems (RecSys) can adapt to different domains flexibly. It utilizes in-context learning (ICL), i.e., prompts, to customize the recommendation functions, which include sensitive historical…

Information Retrieval · Computer Science 2026-01-23 Jiajie He , Min-Chun Chen , Xintong Chen , Xinyang Fang , Yuechun Gu , Keke Chen

Membership Inference Attacks (MIAs) have recently been employed to determine whether a specific text was part of the pre-training data of Large Language Models (LLMs). However, existing methods often misinfer non-members as members, leading…

Machine Learning · Computer Science 2025-05-07 Saleh Zare Zade , Yao Qiang , Xiangyu Zhou , Hui Zhu , Mohammad Amin Roshani , Prashant Khanduri , Dongxiao Zhu

Membership inference attacks (MIAs) are widely used to assess the privacy risks associated with machine learning models. However, when these attacks are applied to pre-trained large language models (LLMs), they encounter significant…

Cryptography and Security · Computer Science 2026-05-26 Meng Tong , Yuntao Du , Kejiang Chen , Weiming Zhang , Ninghui Li

Membership inference attacks (MIAs) have been extensively studied in large language models (LLMs) and vision-language models (VLMs), yet their implications for vision-language-action (VLA) models remain largely unexplored. VLA models differ…

Cryptography and Security · Computer Science 2026-05-11 Yuefeng Peng , Mingzhe Li , Kejing Xia , Renhao Zhang , Amir Houmansadr

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 increasingly trained on tabular data, which, unlike unstructured text, often contains personally identifiable information (PII) in a highly structured and explicit format. As a result, privacy risks arise,…

Cryptography and Security · Computer Science 2025-07-24 Eyal German , Sagiv Antebi , Daniel Samira , Asaf Shabtai , Yuval Elovici

Since machine learning model is often trained on a limited data set, the model is trained multiple times on the same data sample, which causes the model to memorize most of the training set data. Membership Inference Attacks (MIAs) exploit…

Machine Learning · Computer Science 2024-11-19 Depeng Chen , Xiao Liu , Jie Cui , Hong Zhong

Large language models (LLMs) have become the backbone of modern natural language processing but pose privacy concerns about leaking sensitive training data. Membership inference attacks (MIAs), which aim to infer whether a sample is…

Machine Learning · Computer Science 2025-06-03 Toan Tran , Ruixuan Liu , Li Xiong

The rapid scaling of large language models (LLMs) has raised concerns about the transparency and fair use of the data used in their pretraining. Detecting such content is challenging due to the scale of the data and limited exposure of each…

Computation and Language · Computer Science 2025-05-26 Roy Xie , Junlin Wang , Ruomin Huang , Minxing Zhang , Rong Ge , Jian Pei , Neil Zhenqiang Gong , Bhuwan Dhingra

Whether LLMs memorize their training data and what this means, from measuring privacy leakage to detecting copyright violations, has become a rapidly growing area of research. In the last few months, more than 10 new methods have been…

Computation and Language · Computer Science 2025-03-10 Matthieu Meeus , Igor Shilov , Shubham Jain , Manuel Faysse , Marek Rei , Yves-Alexandre de Montjoye

Large Language Models (LLMs) have the promise to revolutionize computing broadly, but their complexity and extensive training data also expose significant privacy vulnerabilities. One of the simplest privacy risks associated with LLMs is…

Machine Learning · Computer Science 2024-09-25 Rongting Zhang , Martin Bertran , Aaron Roth

Membership inference attacks (MIAs) against machine learning (ML) models aim to determine whether a given data point was part of the model training data. These attacks may pose significant privacy risks to individuals whose sensitive data…

Cryptography and Security · Computer Science 2025-11-24 Mona Khalil , Alberto Blanco-Justicia , Najeeb Jebreel , Josep Domingo-Ferrer

A Membership Inference Attack (MIA) assesses how much a target machine learning model reveals about its training data by determining whether specific query instances were part of the training set. State-of-the-art MIAs rely on training…

Cryptography and Security · Computer Science 2026-01-13 Yuntao Du , Yuetian Chen , Hanshen Xiao , Bruno Ribeiro , Ninghui Li

Large vision-language models (LVLMs) derive their capabilities from extensive training on vast corpora of visual and textual data. Empowered by large-scale parameters, these models often exhibit strong memorization of their training data,…

Cryptography and Security · Computer Science 2025-11-05 Jinhua Yin , Peiru Yang , Chen Yang , Huili Wang , Zhiyang Hu , Shangguang Wang , Yongfeng Huang , Tao Qi

Membership inference attacks (MIAs) aim to determine whether a specific example was used to train a given language model. While prior work has explored prompt-based attacks such as ReCALL, these methods rely heavily on the assumption that…

Computation and Language · Computer Science 2026-01-27 Gyuwan Kim , Yang Li , Evangelia Spiliopoulou , Jie Ma , William Yang Wang

With the widespread application of large language models (LLM), concerns about the privacy leakage of model training data have increasingly become a focus. Membership Inference Attacks (MIAs) have emerged as a critical tool for evaluating…

Robotics · Computer Science 2024-12-24 Zichen Song , Sitan Huang , Zhongfeng Kang