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Membership Inference Attacks (MIAs) pose a significant privacy risk by enabling adversaries to determine if a specific data point was part of a model's training set. This work empirically investigates whether MU algorithms can function as a…

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 data used to train deep neural network (DNN) models in applications such as healthcare and finance typically contain sensitive information. A DNN model may suffer from overfitting. Overfitted models have been shown to be susceptible to…

Machine Learning · Computer Science 2022-12-19 Arezoo Rajabi , Dinuka Sahabandu , Luyao Niu , Bhaskar Ramasubramanian , Radha Poovendran

Large Multimodal Language Models (MLLMs) are emerging as one of the foundational tools in an expanding range of applications. Consequently, understanding training-data leakage in these systems is increasingly critical. Log-probability-based…

Cryptography and Security · Computer Science 2026-05-22 Ziyi Tong , Feifei Sun , Le Minh Nguyen

The proliferation of large language models (LLMs) in the real world has come with a rise in copyright cases against companies for training their models on unlicensed data from the internet. Recent works have presented methods to identify if…

Machine Learning · Computer Science 2024-06-11 Pratyush Maini , Hengrui Jia , Nicolas Papernot , Adam Dziedzic

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

Membership inference attacks allow a malicious entity to predict whether a sample is used during training of a victim model or not. State-of-the-art membership inference attacks have shown to achieve good accuracy which poses a great…

Machine Learning · Computer Science 2022-03-07 Shahbaz Rezaei , Xin Liu

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) 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

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

Inference attacks against Machine Learning (ML) models allow adversaries to learn sensitive information about training data, model parameters, etc. While researchers have studied, in depth, several kinds of attacks, they have done so in…

Cryptography and Security · Computer Science 2021-10-07 Yugeng Liu , Rui Wen , Xinlei He , Ahmed Salem , Zhikun Zhang , Michael Backes , Emiliano De Cristofaro , Mario Fritz , Yang Zhang

Retrieval-augmented generation (RAG) has become central to large language model (LLM) deployments, grounding responses in enterprise or proprietary data to reduce hallucinations. However, this design introduces a new privacy risk: model…

Cryptography and Security · Computer Science 2026-05-26 Nguyen Linh Bao Nguyen , Wanlun Ma , Viet Vo , Alsharif Abuadbba , Minghong Fang , Jun Zhang , Yang Xiang

Machine learning models are prone to memorizing sensitive data, making them vulnerable to membership inference attacks in which an adversary aims to infer whether an input sample was used to train the model. Over the past few years,…

Cryptography and Security · Computer Science 2022-08-23 Xinlei He , Zheng Li , Weilin Xu , Cory Cornelius , Yang Zhang

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

Deep learning models often raise privacy concerns as they leak information about their training data. This enables an adversary to determine whether a data point was in a model's training set by conducting a membership inference attack…

Machine Learning · Computer Science 2020-06-11 Yigitcan Kaya , Sanghyun Hong , Tudor Dumitras

Membership inference attacks (MIAs) infer whether a specific data record is used for target model training. MIAs have provoked many discussions in the information security community since they give rise to severe data privacy issues,…

Artificial Intelligence · Computer Science 2022-03-02 Yu Wang , Lifu Huang , Philip S. Yu , Lichao Sun

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 attack (MIA) poses a significant privacy threat in federated learning (FL) as it allows adversaries to determine whether a client's private dataset contains a specific data sample. While defenses against membership…

Machine Learning · Computer Science 2026-02-10 Quan Minh Nguyen , Min-Seon Kim , Hoang M. Ngo , Trong Nghia Hoang , Hyuk-Yoon Kwon , My T. Thai

Recently, adapting the idea of self-supervised learning (SSL) on continuous speech has started gaining attention. SSL models pre-trained on a huge amount of unlabeled audio can generate general-purpose representations that benefit a wide…

Cryptography and Security · Computer Science 2022-08-16 Wei-Cheng Tseng , Wei-Tsung Kao , Hung-yi Lee

With the rapid advancements of large-scale text-to-image diffusion models, various practical applications have emerged, bringing significant convenience to society. However, model developers may misuse the unauthorized data to train…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Qiao Li , Xiaomeng Fu , Xi Wang , Jin Liu , Xingyu Gao , Jiao Dai , Jizhong Han