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This paper presents a survey and taxonomy of LLM fingerprinting and watermarking for identity, ownership verification, provenance, and generated-content attribution. Large language models (LLMs) require substantial investments in data,…

Cryptography and Security · Computer Science 2026-05-29 Bing Liu , Shunping Wang , Yufan Zhu , Xinyi Yu , Jing Huang , Linkang Du , Hongbin Pei , Wei Luo

The widespread deployment and redistribution of large language models (LLMs) have made model provenance tracking a critical challenge. While existing LLM fingerprinting methods, particularly active approaches that embed identity signals via…

Cryptography and Security · Computer Science 2026-05-20 Sixu Chen , Xiang Chen , Hongyao Yu , Jiaxin Hong , Hao Fang , Shuoyang Sun , Bin Chen , Shu-Tao Xia

Model fingerprinting is a widely adopted approach to safeguard the intellectual property rights of open-source models by preventing their unauthorized reuse. It is promising and convenient since it does not necessitate modifying the…

Cryptography and Security · Computer Science 2025-08-12 Shuo Shao , Haozhe Zhu , Yiming Li , Hongwei Yao , Tianwei Zhang , Zhan Qin

As Large Language Models (LLMs) become increasingly integrated into many technological ecosystems across various domains and industries, identifying which model is deployed or being interacted with is critical for the security and…

Cryptography and Security · Computer Science 2025-07-09 Saeif Alhazbi , Ahmed Mohamed Hussain , Gabriele Oligeri , Panos Papadimitratos

Model fingerprinting has emerged as a promising paradigm for claiming model ownership. However, robustness evaluations of these schemes have mostly focused on benign perturbations such as incremental fine-tuning, model merging, and…

Cryptography and Security · Computer Science 2025-10-01 Anshul Nasery , Edoardo Contente , Alkin Kaz , Pramod Viswanath , Sewoong Oh

The widespread adoption of Large Language Model (LLM) in commercial and research settings has intensified the need for robust intellectual property protection. Backdoor-based LLM fingerprinting has emerged as a promising solution for this…

Cryptography and Security · Computer Science 2026-01-09 Hang Fu , Wanli Peng , Yinghan Zhou , Jiaxuan Wu , Juan Wen , Yiming Xue

Large Language Models (LLMs) are widely adopted, but their high training cost leads many developers to fine-tune existing open-source models. While most adhere to open-source licenses, some falsely claim original training despite clear…

Cryptography and Security · Computer Science 2025-12-09 Suqing Wang , Ziyang Ma , Li Xinyi , Zuchao Li

Machine learning (ML) models are costly to train as they can require a significant amount of data, computational resources and technical expertise. Thus, they constitute valuable intellectual property that needs protection from adversaries…

Machine Learning · Computer Science 2023-06-21 Sebastian Szyller , Rui Zhang , Jian Liu , N. Asokan

The protection of cyber Intellectual Property (IP) such as web content is an increasingly critical concern. The rise of large language models (LLMs) with online retrieval capabilities enables convenient access to information but often…

Cryptography and Security · Computer Science 2025-06-09 Yisheng Zhong , Yizhu Wen , Junfeng Guo , Mehran Kafai , Heng Huang , Hanqing Guo , Zhuangdi Zhu

Large language models represent significant investments in computation, data, and engineering expertise, making them extraordinarily valuable intellectual assets. Nevertheless, these AI assets remain vulnerable to unauthorized…

Cryptography and Security · Computer Science 2025-10-20 Shida Wang , Chaohu Liu , Yubo Wang , Linli Xu

Training large language models (LLMs) is resource-intensive and expensive, making protecting intellectual property (IP) for LLMs crucial. Recently, embedding fingerprints into LLMs has emerged as a prevalent method for establishing model…

Cryptography and Security · Computer Science 2025-08-13 Jiaxuan Wu , Yinghan Zhou , Wanli Peng , Yiming Xue , Juan Wen , Ping Zhong

Intellectual property (IP) protection for Deep Neural Networks (DNNs) has raised serious concerns in recent years. Most existing works embed watermarks in the DNN model for IP protection, which need to modify the model and lack of…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Mingfu Xue , Xin Wang , Yinghao Wu , Shifeng Ni , Yushu Zhang , Weiqiang Liu

Fingerprinting large language models (LLMs) is essential for verifying model ownership, ensuring authenticity, and preventing misuse. Traditional fingerprinting methods often require significant computational overhead or white-box…

Cryptography and Security · Computer Science 2025-07-15 Jiacheng Cai , Jiahao Yu , Yangguang Shao , Yuhang Wu

The broad capabilities and substantial resources required to train Large Language Models (LLMs) make them valuable intellectual property, yet they remain vulnerable to copyright infringement, such as unauthorized use and model theft. LLM…

Cryptography and Security · Computer Science 2025-11-18 Shuo Shao , Yiming Li , Yu He , Hongwei Yao , Wenyuan Yang , Dacheng Tao , Zhan Qin

Large language models (LLMs) have recently seen widespread adoption in both academia and industry. As these models grow, they become valuable intellectual property (IP), reflecting substantial investments by their owners. The high cost of…

Cryptography and Security · Computer Science 2025-11-04 Yehonathan Refael , Adam Hakim , Lev Greenberg , Satya Lokam , Tal Aviv , Ben Fishman , Shachar Seidman , Racchit Jain , Jay Tenenbaum

Copyright protection for large language models is of critical importance, given their substantial development costs, proprietary value, and potential for misuse. Existing surveys have predominantly focused on techniques for tracing…

Cryptography and Security · Computer Science 2026-04-08 Zhenhua Xu , Xubin Yue , Zhebo Wang , Haobo Zhang , Qichen Liu , Xixiang Zhao , Jingxuan Zhang , Wenjun Zeng , Wengpeng Xing , Dezhang Kong , Changting Lin , Meng Han

Protecting the copyright of large language models (LLMs) has become crucial due to their resource-intensive training and accompanying carefully designed licenses. However, identifying the original base model of an LLM is challenging due to…

Computation and Language · Computer Science 2025-01-08 Boyi Zeng , Lizheng Wang , Yuncong Hu , Yi Xu , Chenghu Zhou , Xinbing Wang , Yu Yu , Zhouhan Lin

Model fingerprinting has emerged as a powerful tool for model owners to identify their shared model given API access. However, to lower false discovery rate, fight fingerprint leakage, and defend against coalitions of model users attempting…

Cryptography and Security · Computer Science 2025-10-01 Anshul Nasery , Jonathan Hayase , Creston Brooks , Peiyao Sheng , Himanshu Tyagi , Pramod Viswanath , Sewoong Oh

Deep learning techniques have made tremendous progress in a variety of challenging tasks, such as image recognition and machine translation, during the past decade. Training deep neural networks is computationally expensive and requires…

Cryptography and Security · Computer Science 2019-11-11 Zheng Li , Chengyu Hu , Yang Zhang , Shanqing Guo

Large language models (LLMs) are often modified after release through post-processing such as post-training or quantization, which makes it challenging to determine whether one model is derived from another. Existing provenance detection…

Cryptography and Security · Computer Science 2026-05-20 Yuepeng Hu , Zhengyuan Jiang , Mengyuan Li , Osama Ahmed , Zhicong Huang , Cheng Hong , Neil Gong