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~ similar to 2604.20269v1· 20 results

cs.CLcs.CRRecentApr 9, 2026

Efficient Provably Secure Linguistic Steganography via Range Coding

Ruiyi Yan, Yugo Murawaki

The paper proposes an efficient and provably secure linguistic steganography method using range coding that achieves high embedding capacity and speed, outperforming existing methods.

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cs.CRcs.AIRecentMay 8, 2026

Vaporizer: Breaking Watermarking Schemes for Large Language Model Outputs

Jonathan Hong Jin Ng, Anh Tu Ngo, Anupam Chattopadhyay

The paper analyzes the robustness of current LLM watermarking schemes against various text modifications, concluding that watermarks can be removed with reasonable effort.

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cs.CLcs.AIcs.CRRecentApr 6, 2026

XMark: Reliable Multi-Bit Watermarking for LLM-Generated Texts

Jiahao Xu, Rui Hu, Olivera Kotevska, Zikai Zhang

XMark introduces a novel multi-bit watermarking technique that reliably embeds binary messages into LLM-generated text while maintaining high text quality and robust performance even with limited toke…

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cs.CRcs.AIRecentApr 13, 2026

Beyond A Fixed Seal: Adaptive Stealing Watermark in Large Language Models

Shuhao Zhang, Yuli Chen, Jiale Han, Bo Cheng +1 more

The paper proposes Adaptive Stealing (AS), a novel and more robust watermark stealing algorithm that dynamically selects optimal attack perspectives to significantly increase the efficiency of comprom…

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cs.CRcs.CLRecentMay 1, 2026

Block-wise Codeword Embedding for Reliable Multi-bit Text Watermarking

Joeun Kim, HoEun Kim, Dongsup Jin, Young-Sik Kim

The paper introduces BREW, a novel framework that significantly improves the reliability of multi-bit text watermarking for LLMs by replacing flawed decoding-centric methods with a designated two-stag…

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cs.CRcs.AIRecentMar 30, 2026

Adversarial Attacks on Multimodal Large Language Models: A Comprehensive Survey

Bhavuk Jain, Sercan Ö. Arık, Hardeo K. Thakur

This survey provides a comprehensive taxonomy and vulnerability-centric analysis of adversarial attacks targeting Multimodal Large Language Models (MLLMs), offering an explanatory framework for enhanc…

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cs.CRRecentApr 23, 2026

Provably Secure Steganography Based on List Decoding

Kaiyi Pang, Minhao Bai

The paper proposes a provably secure steganography scheme based on list decoding that significantly increases embedding capacity for Large Language Models (LLMs) compared to existing methods.

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cs.CRRecentApr 13, 2026

Can we Watermark Low-Entropy LLM Outputs?

Noam Mazor, Andrew Morgan, Rafael Pass

This paper develops provably undetectable and robust watermarking schemes for LLM outputs even when the per-token entropy is only constant, removing previous dependencies on high entropy rates or larg…

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cs.CRRecentApr 17, 2026

MATRIX: Multi-Layer Code Watermarking via Dual-Channel Constrained Parity-Check Encoding

Yuqing Nie, Chong Wang, Guosheng Xu, Guoai Xu +3 more

MATRIX is a novel, robust code watermarking framework that encodes watermarks using constrained parity-check matrix equations, achieving high detection accuracy and improved robustness for code proven…

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cs.CRRecentMay 8, 2026

Cross-Modal Backdoors in Multimodal Large Language Models

Runhe Wang, Li Bai, Haibo Hu, Songze Li

The paper proposes a novel cross-modal backdoor attack that exploits the vulnerability of lightweight connectors in multimodal LLMs, demonstrating high attack success rates across different modalities…

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cs.CLRecentMay 28, 2026

Linear Ensembles Wash Away Watermarks: On the Fragility of Distributional Perturbations in LLMs

Zhihao Wu, Gracia Gong, Qinglin Zhu, Yudong Chen +1 more

The paper demonstrates that combining outputs from multiple large language models (LLMs) effectively cancels out statistical watermarks, revealing a fundamental vulnerability in current AI text detect…

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cs.CRRecentApr 13, 2026

RLSpoofer: A Lightweight Evaluator for LLM Watermark Spoofing Resilience

Hanbo Huang, Xuan Gong, Yiran Zhang, Hao Zheng +1 more

The paper introduces RLSpoofer, a lightweight, black-box reinforcement learning attack that demonstrates the fragile resilience of current LLM watermarking schemes by achieving a high spoofing success…

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cs.CRcs.LGRecentApr 7, 2026

Stealthy and Adjustable Text-Guided Backdoor Attacks on Multimodal Pretrained Models

Yiyang Zhang, Chaojian Yu, Ziming Hong, Yuanjie Shao +3 more

The paper proposes a novel Text-Guided Backdoor (TGB) attack that uses common words in text descriptions as stealthy triggers for multimodal models, enhancing practicality and controllability.

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cs.CVcs.AIcs.CRRecentApr 12, 2026

Toward Accountable AI-Generated Content on Social Platforms: Steganographic Attribution and Multimodal Harm Detection

Xinlei Guan, David Arosemena, Tejaswi Dhandu, Kuan Huang +6 more

The paper proposes an end-to-end forensic pipeline using steganographic attribution and multimodal harm detection to reliably trace and attribute harmful misuse of AI-generated imagery on social platf…

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cs.CRRecentMar 30, 2026

Safeguarding LLMs Against Misuse and AI-Driven Malware Using Steganographic Canaries

Md Raz, Venkata Sai Charan Putrevu, Meet Udeshi, Prashanth Krishnamurthy +2 more

The paper introduces a novel framework using steganographic canary files to detect and block unauthorized processing of sensitive documents by LLMs, even when the data passes through traditional secur…

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cs.CRRecentApr 30, 2026

VOW: Verifiable and Oblivious Watermark Detection for Large Language Models

Xiaokun Luan, Yihao Zhang, Pengcheng Su, Feiran Lei +1 more

VOW introduces a novel, privacy-preserving, and cryptographically verifiable protocol for detecting watermarks in LLM-generated text, overcoming the limitations of centralized and non-verifiable exist…

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cs.CRcs.CVcs.GRRecentMay 28, 2026

Cert-LAS: Toward Certified Model Ownership Verification for Text-to-Image Diffusion Models via Layer-Adaptive Smoothing

Leyi Qi, Yiming Li, Siyuan Liang, Zhengzhong Tu +1 more

The paper proposes Cert-LAS, a novel certified method for verifying model ownership in text-to-image diffusion models, which is robust against malicious signal removal attacks.

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cs.CRcs.CVRecentMay 7, 2026

Stego Battlefield: Evaluating Image Steganography Attacks and Steganalysis Defenses

Zhen Sun, Zongmin Zhang, Leyi Sheng, Yule Liu +6 more

The paper introduces SADBench, a systematic benchmark designed to evaluate both the effectiveness of steganographic attacks injecting harmful content and the robustness of steganalysis defenses agains…

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cs.CRcs.AIcs.CLRecentApr 24, 2026

SSG: Logit-Balanced Vocabulary Partitioning for LLM Watermarking

Chenxi Gu, Xiaoning Du, John Grundy

The paper proposes SSG, a novel logit-balanced vocabulary partitioning method, to enhance the watermark strength and detectability of LLM-generated content, especially in low-entropy domains like code…

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cs.CRcs.CLRecentMay 22, 2026

Robust LLM Watermarking with Minimal Semantic Distortion for IP Protection

Kieu Dang, Phung Lai, NhatHai Phan, Yelong Shen +1 more

The paper proposes SAFESEAL, a novel key-conditioned watermarking framework that embeds robust, provider-specific watermarks into LLM outputs with minimal semantic distortion, effectively protecting i…

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