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The rapid advancements of large language models (LLMs) have raised public concerns about the privacy leakage of personally identifiable information (PII) within their extensive training datasets. Recent studies have demonstrated that an…

Cryptography and Security · Computer Science 2024-08-01 Xiaoyi Chen , Siyuan Tang , Rui Zhu , Shijun Yan , Lei Jin , Zihao Wang , Liya Su , Zhikun Zhang , XiaoFeng Wang , Haixu Tang

The deployment of Large Language Models in agentic, multi-turn conversational settings has introduced a class of privacy vulnerabilities that existing protection mechanisms are not designed to address. Current approaches to Personally…

Cryptography and Security · Computer Science 2026-04-21 Aman Panjwani

Conversational agents are increasingly woven into individuals' personal lives, yet users often underestimate the privacy risks associated with them. The moment users share information with these agents-such as large language models…

Cryptography and Security · Computer Science 2025-07-29 Ivoline Ngong , Swanand Kadhe , Hao Wang , Keerthiram Murugesan , Justin D. Weisz , Amit Dhurandhar , Karthikeyan Natesan Ramamurthy

The generalization capabilities of Large Language Models (LLMs) have led to their widespread deployment across various applications. However, this increased adoption has introduced several security threats, notably in the forms of…

Cryptography and Security · Computer Science 2025-08-04 Francesco Panebianco , Stefano Bonfanti , Francesco Trovò , Michele Carminati

Large Language Models (LLMs) are increasingly deployed in sensitive domains including healthcare, legal services, and confidential communications, where privacy is paramount. This paper introduces Whisper Leak, a side-channel attack that…

Cryptography and Security · Computer Science 2025-11-06 Geoff McDonald , Jonathan Bar Or

As AI systems increasingly integrate into critical societal sectors, the demand for robust privacy-preserving methods has escalated. This paper introduces Data Obfuscation through Latent Space Projection (LSP), a novel technique aimed at…

Machine Learning · Computer Science 2024-10-24 Mahesh Vaijainthymala Krishnamoorthy

The rapid advancement of large language models (LLMs) has revolutionized natural language processing, enabling applications in diverse domains such as healthcare, finance and education. However, the growing reliance on extensive data for…

Cryptography and Security · Computer Science 2024-12-10 Guoshenghui Zhao , Eric Song

Measuring personal disclosures made in human-chatbot interactions can provide a better understanding of users' AI literacy and facilitate privacy research for large language models (LLMs). We run an extensive, fine-grained analysis on the…

Computation and Language · Computer Science 2024-07-23 Niloofar Mireshghallah , Maria Antoniak , Yash More , Yejin Choi , Golnoosh Farnadi

While robots have previously utilized rule-based systems or probabilistic models for user interaction, the rapid evolution of large language models (LLMs) presents new opportunities to develop LLM-powered robots for enhanced human-robot…

Robotics · Computer Science 2025-11-18 Dakota Sullivan , Shirley Zhang , Jennica Li , Heather Kirkorian , Bilge Mutlu , Kassem Fawaz

Large language models (LLMs) have achieved remarkable success and are widely adopted for diverse applications. However, fine-tuning these models often involves private or sensitive information, raising critical privacy concerns. In this…

Cryptography and Security · Computer Science 2025-06-13 Kaiyuan Zhang , Siyuan Cheng , Hanxi Guo , Yuetian Chen , Zian Su , Shengwei An , Yuntao Du , Charles Fleming , Ashish Kundu , Xiangyu Zhang , Ninghui Li

Privacy research has attracted wide attention as individuals worry that their private data can be easily leaked during interactions with smart devices, social platforms, and AI applications. Computer science researchers, on the other hand,…

Computation and Language · Computer Science 2025-02-14 Haoran Li , Wei Fan , Yulin Chen , Jiayang Cheng , Tianshu Chu , Xuebing Zhou , Peizhao Hu , Yangqiu Song

The rapid development of large language models (LLMs) has driven the widespread adoption of cloud-based LLM inference services, while also bringing prominent privacy risks associated with the transmission and processing of private data in…

Cryptography and Security · Computer Science 2026-03-31 Yu Lin , Qizhi Zhang , Wenqiang Ruan , Daode Zhang , Jue Hong , Ye Wu , Hanning Xia , Yunlong Mao , Sheng Zhong

Large language models (LLMs) demonstrate powerful information handling capabilities and are widely integrated into chatbot applications. OpenAI provides a platform for developers to construct custom GPTs, extending ChatGPT's functions and…

Cryptography and Security · Computer Science 2025-06-05 Wei Wenying , Zhao Kaifa , Xue Lei , Fan Ming

Privacy policies are widely used by digital services and often required for legal purposes. Many machine learning based classifiers have been developed to automate detection of different concepts in a given privacy policy, which can help…

Computation and Language · Computer Science 2025-03-24 Yuxin Chen , Peng Tang , Weidong Qiu , Shujun Li

The rapid development of large language models (LLMs) is redefining the landscape of human-computer interaction, and their integration into various user-service applications is becoming increasingly prevalent. However, transmitting user…

Computation and Language · Computer Science 2025-02-20 Guangwei Li , Yuansen Zhang , Yinggui Wang , Shoumeng Yan , Lei Wang , Tao Wei

Although Large Language Models (LLMs) have become increasingly integral to diverse applications, their capabilities raise significant privacy concerns. This survey offers a comprehensive overview of privacy risks associated with LLMs and…

Cryptography and Security · Computer Science 2025-05-06 Kang Chen , Xiuze Zhou , Yuanguo Lin , Shibo Feng , Li Shen , Pengcheng Wu

The emergence of large language models (LLMs), and their increased use in user-facing systems, has led to substantial privacy concerns. To date, research on these privacy concerns has been model-centered: exploring how LLMs lead to privacy…

Human-Computer Interaction · Computer Science 2024-02-06 Tianshi Li , Sauvik Das , Hao-Ping Lee , Dakuo Wang , Bingsheng Yao , Zhiping Zhang

Large language models (LLMs) have demonstrated exceptional capabilities in text understanding and generation, and they are increasingly being utilized across various domains to enhance productivity. However, due to the high costs of…

Cryptography and Security · Computer Science 2024-11-05 Yu Mao , Xueping Liao , Wei Liu , Anjia Yang

How much information about training samples can be leaked through synthetic data generated by Large Language Models (LLMs)? Overlooking the subtleties of information flow in synthetic data generation pipelines can lead to a false sense of…

Computation and Language · Computer Science 2026-02-13 Matthieu Meeus , Lukas Wutschitz , Santiago Zanella-Béguelin , Shruti Tople , Reza Shokri

This paper investigates privacy jailbreaking in LLMs via steering, focusing on whether manipulating activations can bypass LLM alignment and alter response behaviors to privacy related queries (e.g., a certain public figure's sexual…

Cryptography and Security · Computer Science 2025-08-20 Krishna Kanth Nakka , Xue Jiang , Dmitrii Usynin , Xuebing Zhou