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Large Language Models (LLMs) are gaining increasing attention due to their exceptional performance across numerous tasks. As a result, the general public utilize them as an influential tool for boosting their productivity while natural…

Cryptography and Security · Computer Science 2023-06-16 Zhigang Kan , Linbo Qiao , Hao Yu , Liwen Peng , Yifu Gao , Dongsheng Li

The rise of large language models (LLMs) has introduced new privacy challenges, particularly during inference where sensitive information in prompts may be exposed to proprietary LLM APIs. In this paper, we address the problem of formally…

Cryptography and Security · Computer Science 2025-08-18 Amrita Roy Chowdhury , David Glukhov , Divyam Anshumaan , Prasad Chalasani , Nicolas Papernot , Somesh Jha , Mihir Bellare

Interactions with online Large Language Models raise privacy issues where providers can gather sensitive information about users and their companies from the prompts. While textual prompts can be sanitized using Differential Privacy, we…

Cryptography and Security · Computer Science 2025-06-16 Robin Carpentier , Benjamin Zi Hao Zhao , Hassan Jameel Asghar , Dali Kaafar

The number and dynamic nature of web and mobile applications presents significant challenges for assessing their compliance with data protection laws. In this context, symbolic and statistical Natural Language Processing (NLP) techniques…

Computation and Language · Computer Science 2025-12-22 David Rodriguez , Ian Yang , Jose M. Del Alamo , Norman Sadeh

The widespread use of cloud-based Large Language Models (LLMs) has heightened concerns over user privacy, as sensitive information may be inadvertently exposed during interactions with these services. To protect privacy before sending…

Computation and Language · Computer Science 2025-05-28 Shuo Huang , William MacLean , Xiaoxi Kang , Qiongkai Xu , Zhuang Li , Xingliang Yuan , Gholamreza Haffari , Lizhen Qu

Large Language Models (LLMs) generate responses based on user prompts. Often, these prompts may contain highly sensitive information, including personally identifiable information (PII), which could be exposed to third parties hosting these…

Cryptography and Security · Computer Science 2026-03-30 Shashie Dilhara Batan Arachchige , Hassan Jameel Asghar , Benjamin Zi Hao Zhao , Dinusha Vatsalan , Dali Kaafar

The rapid adoption of online chatbots represents a significant advancement in artificial intelligence. However, this convenience brings considerable privacy concerns, as prompts can inadvertently contain sensitive information exposed to…

Cryptography and Security · Computer Science 2024-06-21 Zhili Shen , Zihang Xi , Ying He , Wei Tong , Jingyu Hua , Sheng Zhong

As Large Language Models (LLMs) achieve remarkable success across a wide range of applications, such as chatbots and code copilots, concerns surrounding the generation of harmful content have come increasingly into focus. Despite…

Computation and Language · Computer Science 2025-09-30 Wenjie Fu , Huandong Wang , Junyao Gao , Guoan Wan , Tao Jiang

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

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

Numerous companies have started offering services based on large language models (LLM), such as ChatGPT, which inevitably raises privacy concerns as users' prompts are exposed to the model provider. Previous research on secure reasoning…

Cryptography and Security · Computer Science 2023-09-07 Yu Chen , Tingxin Li , Huiming Liu , Yang Yu

Large language models (LLMs) are sophisticated artificial intelligence systems that enable machines to generate human-like text with remarkable precision. While LLMs offer significant technological progress, their development using vast…

Cryptography and Security · Computer Science 2025-06-23 Yashothara Shanmugarasa , Ming Ding , M. A. P Chamikara , Thierry Rakotoarivelo

Pre-trained language models (PLMs) have demonstrated significant proficiency in solving a wide range of general natural language processing (NLP) tasks. Researchers have observed a direct correlation between the performance of these models…

Computation and Language · Computer Science 2024-04-12 Kennedy Edemacu , Xintao Wu

We explore a knowledge sanitization approach to mitigate the privacy concerns associated with large language models (LLMs). LLMs trained on a large corpus of Web data can memorize and potentially reveal sensitive or confidential…

Computation and Language · Computer Science 2024-03-05 Yoichi Ishibashi , Hidetoshi Shimodaira

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

The widespread usage of online Large Language Models (LLMs) inference services has raised significant privacy concerns about the potential exposure of private information in user inputs to malicious eavesdroppers. Existing privacy…

Cryptography and Security · Computer Science 2025-05-29 Ziqian Zeng , Jianwei Wang , Junyao Yang , Zhengdong Lu , Haoran Li , Huiping Zhuang , Cen Chen

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

Large language models (LLMs) are complex artificial intelligence systems capable of understanding, generating and translating human language. They learn language patterns by analyzing large amounts of text data, allowing them to perform…

Cryptography and Security · Computer Science 2024-03-15 Biwei Yan , Kun Li , Minghui Xu , Yueyan Dong , Yue Zhang , Zhaochun Ren , Xiuzhen Cheng

Large Language Models (LLMs) hold promise for advancing legal practice by automating complex tasks and improving access to justice. However, their adoption is limited by concerns over client confidentiality, especially when lawyers include…

Computation and Language · Computer Science 2025-01-22 M. Mikail Demir , Hakan T. Otal , M. Abdullah Canbaz

Large language models (LLMs) are increasingly applied in fields such as finance, education, and governance due to their ability to generate human-like text and adapt to specialized tasks. However, their widespread adoption raises critical…

Cryptography and Security · Computer Science 2025-05-26 Yu Wang , Cailing Cai , Zhihua Xiao , Peifung E. Lam
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