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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 language models (LLMs) risk retaining sensitive, copyrighted, or harmful information from their training data. Entity-level unlearning addresses this issue by removing all knowledge of a specific entity while preserving the model's…

Computation and Language · Computer Science 2026-01-15 Xiaoqi Han , Víctor Gutiérrez-Basulto , Ru Li , Xiaoli Li , Jiye Liang , Jeff Z. Pan

Large Language Model (LLM) agents have achieved rapid adoption and demonstrated remarkable capabilities across a wide range of applications. To improve reasoning and task execution, modern LLM agents would incorporate memory modules or…

Cryptography and Security · Computer Science 2026-04-14 Xingyu Lyu , Jianfeng He , Ning Wang , Yidan Hu , Tao Li , Danjue Chen , Shixiong Li , Yimin Chen

Large Language Models (LLMs) are integral to applications such as conversational agents and content creation, where precise control over a model's personality is essential for maintaining tone, consistency, and user engagement. However,…

Computation and Language · Computer Science 2026-01-22 Seojin Hwang , Yumin Kim , Byeongjeong Kim , Donghoon Shin , Hwanhee Lee

Large language models (LLMs) are increasingly deployed in enterprise settings where they interact with multiple users and are trained or fine-tuned on sensitive internal data. While fine-tuning enhances performance by internalizing domain…

We introduce Advertisement Embedding Attacks (AEA), a new class of LLM security threats that stealthily inject promotional or malicious content into model outputs and AI agents. AEA operate through two low-cost vectors: (1) hijacking…

Cryptography and Security · Computer Science 2025-09-10 Qiming Guo , Jinwen Tang , Xingran Huang

Large language models (LLMs) exhibit remarkable capabilities in understanding and generating natural language. However, these models can inadvertently memorize private information, posing significant privacy risks. This study addresses the…

Computation and Language · Computer Science 2024-09-17 Zhenhua Liu , Tong Zhu , Chuanyuan Tan , Wenliang Chen

Fine-tuning large language models on private data for downstream applications poses significant privacy risks in potentially exposing sensitive information. Several popular community platforms now offer convenient distribution of a large…

Machine Learning · Computer Science 2024-09-02 Md Rafi Ur Rashid , Jing Liu , Toshiaki Koike-Akino , Shagufta Mehnaz , Ye Wang

Large Language Models (LLMs) have demonstrated strong performance across diverse tasks, but fine-tuning them typically relies on cloud-based, centralized infrastructures. This requires data owners to upload potentially sensitive data to…

Cryptography and Security · Computer Science 2025-10-21 Asmita Mohanty , Gezheng Kang , Lei Gao , Murali Annavaram

Modern Integrated Development Environments (IDEs) increasingly leverage Large Language Models (LLMs) to provide advanced features like code autocomplete. While powerful, training these models on user-written code introduces significant…

Cryptography and Security · Computer Science 2026-02-02 Evgeny Grigorenko , David Stanojević , David Ilić , Egor Bogomolov , Kostadin Cvejoski

The increasing use of Online Vision Language Models (OVLMs) for processing images has introduced significant privacy risks, as individuals frequently upload images for various utilities, unaware of the potential for privacy violations.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Karmesh Siddharam Chaudhari , Youxiang Zhu , Amy Feng , Xiaohui Liang , Honggang Zhang

Applying machine learning (ML) to sensitive domains requires privacy protection of the underlying training data through formal privacy frameworks, such as differential privacy (DP). Yet, usually, the privacy of the training data comes at…

Machine Learning · Computer Science 2022-11-09 Franziska Boenisch , Christopher Mühl , Roy Rinberg , Jannis Ihrig , Adam Dziedzic

Large language models (LLMs) do not preserve privacy at inference-time. The LLM's outputs can inadvertently reveal information about the model's context, which presents a privacy challenge when the LLM is augmented via tools or databases…

Computation and Language · Computer Science 2026-02-03 Rushil Thareja , Preslav Nakov , Praneeth Vepakomma , Nils Lukas

Recent privacy research on large language models (LLMs) has shown that they achieve near-human-level performance at inferring personal data from online texts. With ever-increasing model capabilities, existing text anonymization methods are…

Artificial Intelligence · Computer Science 2025-02-04 Robin Staab , Mark Vero , Mislav Balunović , Martin Vechev

Recent developments in language modeling have increased their use in various applications and domains. Language models, often trained on sensitive data, can memorize and disclose this information during privacy attacks, raising concerns…

Computation and Language · Computer Science 2025-08-22 Pritilata Saha , Abhirup Sinha

Concerns regarding Large Language Models (LLMs) to memorize and disclose private information, particularly Personally Identifiable Information (PII), become prominent within the community. Many efforts have been made to mitigate the privacy…

Machine Learning · Computer Science 2024-05-21 Ruizhe Chen , Tianxiang Hu , Yang Feng , Zuozhu Liu

Prompt-tuning has received attention as an efficient tuning method in the language domain, i.e., tuning a prompt that is a few tokens long, while keeping the large language model frozen, yet achieving comparable performance with…

Cryptography and Security · Computer Science 2023-04-18 Shangyu Xie , Wei Dai , Esha Ghosh , Sambuddha Roy , Dan Schwartz , Kim Laine

Large Language Models (LLMs) are increasingly deployed in mental health contexts, from structured therapeutic support tools to informal chat-based well-being assistants. While these systems increase accessibility, scalability, and…

Human-Computer Interaction · Computer Science 2025-10-14 Soraya S. Anvari , Rina R. Wehbe

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

Privacy is an important concern when building statistical models on data containing personal information. Differential privacy offers a strong definition of privacy and can be used to solve several privacy concerns (Dwork et al., 2014).…

Cryptography and Security · Computer Science 2021-02-03 Satyapriya Krishna , Rahul Gupta , Christophe Dupuy