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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

State-of-the-art membership inference attacks (MIAs) typically require training many reference models, making it difficult to scale these attacks to large pre-trained language models (LLMs). As a result, prior research has either relied on…

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

Large language models (LLMs) have demonstrated great performance across various benchmarks, showing potential as general-purpose task solvers. However, as LLMs are typically trained on vast amounts of data, a significant concern in their…

Computation and Language · Computer Science 2025-05-13 Yujuan Fu , Ozlem Uzuner , Meliha Yetisgen , Fei Xia

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

Large Language Models (LLMs) are increasingly deployed to enable or improve a multitude of real-world applications. Given the large size of their training data sets, their tendency to memorize training data raises serious privacy and…

Machine Learning · Computer Science 2026-01-27 Pedram Zaree , Md Abdullah Al Mamun , Yue Dong , Ihsen Alouani , Nael Abu-Ghazaleh

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

We propose Fast-MIA (https://github.com/Nikkei/fast-mia), a Python library for efficiently evaluating membership inference attacks (MIA) against large language models (LLMs). MIA has emerged as a crucial technique for auditing privacy risks…

Cryptography and Security · Computer Science 2026-05-12 Hiromu Takahashi , Shotaro Ishihara

Membership inference attack (MIA) has become one of the most widely used and effective methods for evaluating the privacy risks of machine learning models. These attacks aim to determine whether a specific sample is part of the model's…

Cryptography and Security · Computer Science 2025-06-04 Jing Xue , Zhishen Sun , Haishan Ye , Luo Luo , Xiangyu Chang , Ivor Tsang , Guang Dai

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

Language Models (LMs) typically adhere to a "pre-training and fine-tuning" paradigm, where a universal pre-trained model can be fine-tuned to cater to various specialized domains. Low-Rank Adaptation (LoRA) has gained the most widespread…

Cryptography and Security · Computer Science 2025-07-25 Delong Ran , Xinlei He , Tianshuo Cong , Anyu Wang , Qi Li , Xiaoyun Wang

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

Membership inference attacks aim to detect if a particular data point was used in training a model. We design a novel statistical test to perform robust membership inference attacks (RMIA) with low computational overhead. We achieve this by…

Machine Learning · Statistics 2024-06-13 Sajjad Zarifzadeh , Philippe Liu , Reza Shokri

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 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

Large Language Models (LLMs) have seen widespread adoption due to their remarkable natural language capabilities. However, when deploying them in real-world settings, it is important to align LLMs to generate texts according to acceptable…

Artificial Intelligence · Computer Science 2025-04-29 Qizhang Feng , Siva Rajesh Kasa , Santhosh Kumar Kasa , Hyokun Yun , Choon Hui Teo , Sravan Babu Bodapati

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

Large Language Models (LLMs) have recently demonstrated remarkable performance in generating high-quality tabular synthetic data. In practice, two primary approaches have emerged for adapting LLMs to tabular data generation: (i) fine-tuning…

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

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

Membership inference attacks (MIAs) have become the standard tool for evaluating privacy leakage in machine learning (ML). Among them, the Likelihood-Ratio Attack (LiRA) is widely regarded as the state of the art when sufficient shadow…

Cryptography and Security · Computer Science 2026-03-10 Najeeb Jebreel , Mona Khalil , David Sánchez , Josep Domingo-Ferrer