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Recent advances in large language models (LLMs) have made a profound impact on our society and also raised new security concerns. Particularly, due to the remarkable inference ability of LLMs, the privacy violation attack (PVA), revealed by…

Cryptography and Security · Computer Science 2025-06-26 Wanli Peng , Xin Chen , Hang Fu , XinYu He , Xue Yiming , Juan Wen

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…

Cryptography and Security · Computer Science 2026-03-25 Najeeb Jebreel , David Sánchez , Josep Domingo-Ferrer

With the emergence of powerful large-scale foundation models, the training paradigm is increasingly shifting from from-scratch training to transfer learning. This enables high utility training with small, domain-specific datasets typical in…

Machine Learning · Computer Science 2025-10-09 Yuxuan Bai , Gauri Pradhan , Marlon Tobaben , Antti Honkela

Fine-tuning large language models (LLMs) with local data is a widely adopted approach for organizations seeking to adapt LLMs to their specific domains. Given the shared characteristics in data across different organizations, the idea of…

Machine Learning · Computer Science 2025-09-26 Wenkai Guo , Xuefeng Liu , Haolin Wang , Jianwei Niu , Shaojie Tang , Jing Yuan

The advent of Large Language Models (LLMs) has marked significant achievements in language processing and reasoning capabilities. Despite their advancements, LLMs face vulnerabilities to data poisoning attacks, where the adversary inserts…

Machine Learning · Computer Science 2025-05-30 Xiangyu Zhou , Yao Qiang , Saleh Zare Zade , Mohammad Amin Roshani , Prashant Khanduri , Douglas Zytko , Dongxiao Zhu

Access to large-scale high-quality healthcare databases is key to accelerate medical research and make insightful discoveries about diseases. However, access to such data is often limited by patient privacy concerns, data sharing…

Fine-tuned language models pose significant privacy risks, as they may memorize and expose sensitive information from their training data. Membership inference attacks (MIAs) provide a principled framework for auditing these risks, yet…

Computation and Language · Computer Science 2026-04-14 David Ilić , David Stanojević , Kostadin Cvejoski

Large language models (LLMs) have achieved remarkable performance on a wide range of tasks. However, recent studies have shown that LLMs can memorize training data and simple repeated tokens can trick the model to leak the data. In this…

Cryptography and Security · Computer Science 2024-05-21 Yang Bai , Ge Pei , Jindong Gu , Yong Yang , Xingjun Ma

Today, the training of large language models (LLMs) can involve personally identifiable information and copyrighted material, incurring dataset misuse. To mitigate the problem of dataset misuse, this paper explores \textit{dataset…

Cryptography and Security · Computer Science 2025-12-09 Ruikai Zhou , Kang Yang , Xun Chen , Wendy Hui Wang , Guanhong Tao , Jun Xu

Machine learning (ML) has become a core component of many real-world applications and training data is a key factor that drives current progress. This huge success has led Internet companies to deploy machine learning as a service (MLaaS).…

Cryptography and Security · Computer Science 2018-12-18 Ahmed Salem , Yang Zhang , Mathias Humbert , Pascal Berrang , Mario Fritz , Michael Backes

The capabilities of large language models (LLMs) have been successfully applied in the context of table representation learning. The recently proposed tabular language models have reported state-of-the-art results across various tasks for…

Computation and Language · Computer Science 2023-09-19 Aneta Koleva , Martin Ringsquandl , Volker Tresp

Vision-Language Models (VLMs), built on pre-trained vision encoders and large language models (LLMs), have shown exceptional multi-modal understanding and dialog capabilities, positioning them as catalysts for the next technological…

Cryptography and Security · Computer Science 2025-02-10 Yuke Hu , Zheng Li , Zhihao Liu , Yang Zhang , Zhan Qin , Kui Ren , Chun Chen

Large language models (LLMs) show strong performance across many applications, but their ability to memorize and potentially reveal training data raises serious privacy concerns. We introduce the PopQuiz Attack, a black-box membership…

Cryptography and Security · Computer Science 2026-05-08 Zeyuan Chen , Yihan Ma , Xinyue Shen , Michael Backes , Yang Zhang

Tabular data is among the oldest and most ubiquitous forms of data. However, the generation of synthetic samples with the original data's characteristics remains a significant challenge for tabular data. While many generative models from…

Machine Learning · Computer Science 2023-04-25 Vadim Borisov , Kathrin Seßler , Tobias Leemann , Martin Pawelczyk , Gjergji Kasneci

The increasing use of synthetic data generated by Large Language Models (LLMs) presents both opportunities and challenges in data-driven applications. While synthetic data provides a cost-effective, scalable alternative to real-world data…

Computation and Language · Computer Science 2025-07-25 Tevin Atwal , Chan Nam Tieu , Yefeng Yuan , Zhan Shi , Yuhong Liu , Liang Cheng

Neural models for vulnerability prediction (VP) have achieved impressive performance by learning from large-scale code repositories. However, their susceptibility to Membership Inference Attacks (MIAs), where adversaries aim to infer…

Cryptography and Security · Computer Science 2025-12-10 Yihan Liao , Jacky Keung , Xiaoxue Ma , Jingyu Zhang , Yicheng Sun

Retrieval-augmented generation (RAG) is a powerful technique to facilitate language model with proprietary and private data, where data privacy is a pivotal concern. Whereas extensive research has demonstrated the privacy risks of large…

Cryptography and Security · Computer Science 2024-03-03 Shenglai Zeng , Jiankun Zhang , Pengfei He , Yue Xing , Yiding Liu , Han Xu , Jie Ren , Shuaiqiang Wang , Dawei Yin , Yi Chang , Jiliang Tang

OpenLVLM-MIA is a new benchmark that highlights fundamental challenges in evaluating membership inference attacks (MIA) against large vision-language models (LVLMs). While prior work has reported high attack success rates, our analysis…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Ryoto Miyamoto , Xin Fan , Fuyuko Kido , Tsuneo Matsumoto , Hayato Yamana

In several jurisdictions, the regulatory framework on the release and sharing of personal data is being extended to machine learning (ML). The implicit assumption is that disclosing a trained ML model entails a privacy risk for any personal…

Cryptography and Security · Computer Science 2025-11-14 Josep Domingo-Ferrer

Federated large language models (FedLLMs) enable cross-silo collaborative training among institutions while preserving data locality, making them appealing for privacy-sensitive domains such as law, finance, and healthcare. However, the…

Computation and Language · Computer Science 2026-02-26 Yingqi Hu , Zhuo Zhang , Jingyuan Zhang , Jinghua Wang , Qifan Wang , Lizhen Qu , Zenglin Xu