Advances in Linguistic Steganography and Watermarking

The field of linguistic steganography and watermarking is moving towards developing more secure and efficient methods for embedding and detecting hidden information in text. Recent research has focused on addressing the challenges of tokenization ambiguity, improving embedding capacity, and enhancing the robustness of watermarking algorithms. Notably, innovative approaches such as context-aware thresholding and order-agnostic watermarking have been proposed to improve the performance of watermarking algorithms in various scenarios.

Some papers are particularly noteworthy for their innovative contributions. For example, one paper proposes a novel disambiguation algorithm that overcomes the capacity limitation of existing methods while retaining provable security guarantees. Another paper introduces a context-aware thresholding framework that dynamically adjusts watermarking intensity based on real-time semantic context, improving text quality in cross-tasks without sacrificing detection accuracy. A third paper presents the first watermarking framework designed specifically for diffusion large language models, achieving high detection rates while maintaining text quality. Additionally, a paper on agent-driven strategy evolution in LLM-based text steganography demonstrates superior performance with gains in perplexity and anti-steganalysis performance over state-of-the-art methods.

Sources

A High-Capacity and Secure Disambiguation Algorithm for Neural Linguistic Steganography

CATMark: A Context-Aware Thresholding Framework for Robust Cross-Task Watermarking in Large Language Models

DMark: Order-Agnostic Watermarking for Diffusion Large Language Models

Consistent Kernel Change-Point Detection under m-Dependence for Text Segmentation

On the Empirical Power of Goodness-of-Fit Tests in Watermark Detection

Auto-Stega: An Agent-Driven System for Lifelong Strategy Evolution in LLM-Based Text Steganography

Security-Robustness Trade-offs in Diffusion Steganography: A Comparative Analysis of Pixel-Space and VAE-Based Architectures

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