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Designing privacy-preserving machine learning algorithms has received great attention in recent years, especially in the setting when the data contains sensitive information. Differential privacy (DP) is a widely used mechanism for data…

Machine Learning · Computer Science 2025-09-11 Chunyang Liao , Deanna Needell , Hayden Schaeffer , Alexander Xue

Large language models (LLMs) have transformed natural language processing, but their ability to memorize training data poses significant privacy risks. This paper investigates model inversion attacks on the Llama 3.2 model, a multilingual…

Machine Learning · Computer Science 2025-07-08 Sathesh P. Sivashanmugam

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

Directly motivated by security-related applications from the Homeland Security Enterprise, we focus on the privacy-preserving analysis of graph data, which provides the crucial capacity to represent rich attributes and relationships. In…

Cryptography and Security · Computer Science 2022-07-04 Dongqi Fu , Jingrui He , Hanghang Tong , Ross Maciejewski

Deep neural networks often use large, high-quality datasets to achieve high performance on many machine learning tasks. When training involves potentially sensitive data, this process can raise privacy concerns, as large models have been…

Machine Learning · Computer Science 2025-06-23 Felix Zhou , Samson Zhou , Vahab Mirrokni , Alessandro Epasto , Vincent Cohen-Addad

Prompt serves as a crucial link in interacting with large language models (LLMs), widely impacting the accuracy and interpretability of model outputs. However, acquiring accurate and high-quality responses necessitates precise prompts,…

Cryptography and Security · Computer Science 2024-08-20 Xiongtao Sun , Gan Liu , Zhipeng He , Hui Li , Xiaoguang Li

The ever-increasing adoption of Large Language Models in critical sectors like finance, healthcare, and government raises privacy concerns regarding the handling of sensitive Personally Identifiable Information (PII) during training. In…

Machine Learning · Computer Science 2026-01-06 Intae Jeon , Yujeong Kwon , Hyungjoon Koo

Large language models (LLMs) risk retaining unauthorized or sensitive information from their training data, which raises privacy concerns. LLM unlearning seeks to mitigate these risks by selectively removing specified data while maintaining…

Computation and Language · Computer Science 2025-05-29 Hwan Chang , Hwanhee Lee

Neural language models (LMs) are vulnerable to training data extraction attacks due to data memorization. This paper introduces a novel attack scenario wherein an attacker adversarially fine-tunes pre-trained LMs to amplify the exposure of…

Computation and Language · Computer Science 2024-09-04 Myung Gyo Oh , Hong Eun Ahn , Leo Hyun Park , Taekyoung Kwon

Data serves as the fundamental foundation for advancing deep learning, particularly tabular data presented in a structured format, which is highly conducive to modeling. However, even in the era of LLM, obtaining tabular data from sensitive…

Machine Learning · Computer Science 2024-08-07 Yuxin Wang , Duanyu Feng , Yongfu Dai , Zhengyu Chen , Jimin Huang , Sophia Ananiadou , Qianqian Xie , Hao Wang

The unauthorized use of personal data in model training has emerged as a growing privacy threat. Unlearnable examples (UEs) address this issue by embedding imperceptible perturbations into benign examples to obstruct feature learning.…

Machine Learning · Computer Science 2026-05-08 Bo Wang , Jia Ni , Mengnan Zhao , Zhan Qin , Kui Ren

Motivated by a real-life problem of sharing social network data that contain sensitive personal information, we propose a novel approach to release and analyze synthetic graphs in order to protect privacy of individual relationships…

Computation · Statistics 2016-09-26 Vishesh Karwa , Pavel N. Krivitsky , Aleksandra B. Slavković

Modern machine learning systems achieve great success when trained on large datasets. However, these datasets usually contain sensitive information (e.g. medical records, face images), leading to serious privacy concerns. Differentially…

Machine Learning · Computer Science 2022-11-04 Dihong Jiang , Guojun Zhang , Mahdi Karami , Xi Chen , Yunfeng Shao , Yaoliang Yu

Recent advancements in generative large language models (LLMs) have enabled wider applicability, accessibility, and flexibility. However, their reliability and trustworthiness are still in doubt, especially for concerns regarding…

Computation and Language · Computer Science 2025-05-26 Haoran Li , Wenbin Hu , Huihao Jing , Yulin Chen , Qi Hu , Sirui Han , Tianshu Chu , Peizhao Hu , Yangqiu Song

The memorization of sensitive and personally identifiable information (PII) by large language models (LLMs) poses growing privacy risks as models scale and are increasingly deployed in real-world applications. Existing efforts to study…

Computation and Language · Computer Science 2025-05-20 Sriram Selvam , Anneswa Ghosh

Large language models are shown to memorize privacy information such as social security numbers in training data. Given the sheer scale of the training corpus, it is challenging to screen and filter these privacy data, either manually or…

Computation and Language · Computer Science 2022-06-27 Xuandong Zhao , Lei Li , Yu-Xiang Wang

The difficulty of anonymizing text data hinders the development and deployment of NLP in high-stakes domains that involve private data, such as healthcare and social services. Poorly anonymized sensitive data cannot be easily shared with…

Computation and Language · Computer Science 2024-10-14 Krithika Ramesh , Nupoor Gandhi , Pulkit Madaan , Lisa Bauer , Charith Peris , Anjalie Field

Continual learning (CL) in large language models (LLMs) is an evolving domain that focuses on developing efficient and sustainable training strategies to adapt models to emerging knowledge and achieve robustness in dynamic environments. Our…

Computation and Language · Computer Science 2025-02-13 Çağatay Yıldız , Nishaanth Kanna Ravichandran , Nitin Sharma , Matthias Bethge , Beyza Ermis

Motivated by privacy concerns in long-term longitudinal studies in medical and social science research, we study the problem of continually releasing differentially private synthetic data from longitudinal data collections. We introduce a…

Data Structures and Algorithms · Computer Science 2024-05-28 Mark Bun , Marco Gaboardi , Marcel Neunhoeffer , Wanrong Zhang

The interactive nature of Large Language Models (LLMs), which closely track user data and context, has prompted users to share personal and private information in unprecedented ways. Even when users opt out of allowing their data to be used…

Cryptography and Security · Computer Science 2025-08-26 GodsGift Uzor , Hasan Al-Qudah , Ynes Ineza , Abdul Serwadda