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Related papers: Adaptive Text Watermark for Large Language Models

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Large Language Models (LLMs) are widely used in complex natural language processing tasks but raise privacy and security concerns due to the lack of identity recognition. This paper proposes a multi-party credible watermarking framework…

Artificial Intelligence · Computer Science 2025-09-17 Haoyu Jiang , Xuhong Wang , Ping Yi , Shanzhe Lei , Yilun Lin

Existing sentence-level watermarking methods enhance robustness to paraphrasing by anchoring watermarks in sentence semantics. However, their prefix-based designs remain vulnerable to structural perturbations, such as sentence splitting and…

Cryptography and Security · Computer Science 2026-05-29 Yuexin Li , Wenjie Qu , Linyu Wu , Yulin Chen , Yufei He , Tri Cao , Bryan Hooi , Jiaheng Zhang

Untrustworthy users can misuse image generators to synthesize high-quality deepfakes and engage in unethical activities. Watermarking deters misuse by marking generated content with a hidden message, enabling its detection using a secret…

Cryptography and Security · Computer Science 2024-01-23 Nils Lukas , Abdulrahman Diaa , Lucas Fenaux , Florian Kerschbaum

We propose an imperceptible multi-bit text watermark embedded by paraphrasing with LLMs. We fine-tune a pair of LLM paraphrasers that are designed to behave differently so that their paraphrasing difference reflected in the text semantics…

Artificial Intelligence · Computer Science 2025-06-18 Xiaojun Xu , Jinghan Jia , Yuanshun Yao , Yang Liu , Hang Li

With the rise of large language models (LLMs) and concerns about potential misuse, watermarks for generative LLMs have recently attracted much attention. An important aspect of such watermarks is the trade-off between their identifiability…

Cryptography and Security · Computer Science 2024-01-01 Bram Wouters

The proliferation of open-source code and large language models (LLMs) for code generation has amplified the risks of unauthorized reuse and intellectual property infringement. Source code watermarking offers a potential solution, yet…

Cryptography and Security · Computer Science 2026-04-21 Rui Xu , Jiawei Chen , Weizhi Liu , Zhaoxia Yin , Cong Kong , Xinpeng Zhang

The evolution of Large Language Models (LLMs) into agentic systems that perform autonomous reasoning and tool use has created significant intellectual property (IP) value. We demonstrate that these systems are highly vulnerable to imitation…

Artificial Intelligence · Computer Science 2026-02-10 Liwen Wang , Zongjie Li , Yuchong Xie , Shuai Wang , Dongdong She , Wei Wang , Juergen Rahmel

Existing watermarking algorithms are vulnerable to paraphrase attacks because of their token-level design. To address this issue, we propose SemStamp, a robust sentence-level semantic watermarking algorithm based on locality-sensitive…

Since the remarkable generation performance of large language models raised ethical and legal concerns, approaches to detect machine-generated text by embedding watermarks are being developed. However, we discover that the existing works…

Computation and Language · Computer Science 2024-07-04 Taehyun Lee , Seokhee Hong , Jaewoo Ahn , Ilgee Hong , Hwaran Lee , Sangdoo Yun , Jamin Shin , Gunhee Kim

Watermarking has emerged as a promising technique to track AI-generated content and differentiate it from authentic human creations. While prior work extensively studies watermarking for autoregressive large language models (LLMs) and image…

Cryptography and Security · Computer Science 2026-02-16 Avi Bagchi , Akhil Bhimaraju , Moulik Choraria , Daniel Alabi , Lav R. Varshney

A new approach to linguistic watermarking of language models is presented in which information is imperceptibly inserted into the output text while preserving its readability and original meaning. A cross-attention mechanism is used to…

Computation and Language · Computer Science 2024-04-10 Folco Bertini Baldassini , Huy H. Nguyen , Ching-Chung Chang , Isao Echizen

Large language model (LLM) watermarking has emerged as a promising approach for detecting and attributing AI-generated text, yet its robustness to black-box spoofing remains insufficiently evaluated. Existing evaluation methods often demand…

Cryptography and Security · Computer Science 2026-04-14 Hanbo Huang , Xuan Gong , Yiran Zhang , Hao Zheng , Shiyu Liang

Text watermarking aims to subtly embed statistical signals into text by controlling the Large Language Model (LLM)'s sampling process, enabling watermark detectors to verify that the output was generated by the specified model. The…

Machine Learning · Computer Science 2025-05-13 Yixin Cheng , Hongcheng Guo , Yangming Li , Leonid Sigal

Generative images have proliferated on Web platforms in social media and online copyright distribution scenarios, and semantic watermarking has increasingly been integrated into diffusion models to support reliable provenance tracking and…

Machine Learning · Computer Science 2026-02-26 Zheng Gao , Xiaoyu Li , Zhicheng Bao , Xiaoyan Feng , Jiaojiao Jiang

We investigate the radioactivity of text generated by large language models (LLM), i.e. whether it is possible to detect that such synthetic input was used to train a subsequent LLM. Current methods like membership inference or active IP…

Cryptography and Security · Computer Science 2024-10-29 Tom Sander , Pierre Fernandez , Alain Durmus , Matthijs Douze , Teddy Furon

Watermarking embeds information into digital content like images, audio, or text, imperceptible to humans but robustly detectable by specific algorithms. This technology has important applications in many challenges of the industry such as…

Cryptography and Security · Computer Science 2025-02-11 Pierre Fernandez

Text watermarking technology aims to tag and identify content produced by large language models (LLMs) to prevent misuse. In this study, we introduce the concept of cross-lingual consistency in text watermarking, which assesses the ability…

Computation and Language · Computer Science 2024-06-05 Zhiwei He , Binglin Zhou , Hongkun Hao , Aiwei Liu , Xing Wang , Zhaopeng Tu , Zhuosheng Zhang , Rui Wang

We consider the emerging problem of identifying the presence and use of watermarking schemes in widely used, publicly hosted, closed source large language models (LLMs). We introduce a suite of baseline algorithms for identifying watermarks…

Machine Learning · Computer Science 2023-05-31 Leonard Tang , Gavin Uberti , Tom Shlomi

We show the viability of tackling misuses of large language models beyond the identification of machine-generated text. While existing zero-bit watermark methods focus on detection only, some malicious misuses demand tracing the adversary…

Computation and Language · Computer Science 2024-03-21 KiYoon Yoo , Wonhyuk Ahn , Nojun Kwak

Watermarking enables GenAI providers to verify whether content was generated by their models. A watermark is a hidden signal in the content, whose presence can be detected using a secret watermark key. A core security threat are forgery…

Cryptography and Security · Computer Science 2026-05-12 Toluwani Aremu , Noor Hussein , Munachiso Nwadike , Samuele Poppi , Jie Zhang , Karthik Nandakumar , Neil Gong , Nils Lukas