Who Gets Flagged? The Pluralistic Evaluation Gap in AI Content Watermarking

Fuente: arXiv
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Hauptverfasser: Nemecek, Alexander, Zafar, Osama, Xu, Yuqiao, Li, Wenbiao, Ayday, Erman
Format: Preprint
Veröffentlicht: 2026
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author Nemecek, Alexander
Zafar, Osama
Xu, Yuqiao
Li, Wenbiao
Ayday, Erman
author_facet Nemecek, Alexander
Zafar, Osama
Xu, Yuqiao
Li, Wenbiao
Ayday, Erman
contents Watermarking is becoming the default mechanism for AI content authentication, with governance policies and frameworks referencing it as infrastructure for content provenance. Yet across text, image, and audio modalities, watermark signal strength, detectability, and robustness depend on statistical properties of the content itself, properties that vary systematically across languages, cultural visual traditions, and demographic groups. We examine how this content dependence creates modality-specific pathways to bias. Reviewing the major watermarking benchmarks across modalities, we find that, with one exception, none report performance across languages, cultural content types, or population groups. To address this, we propose three concrete evaluation dimensions for pluralistic watermark benchmarking: cross-lingual detection parity, culturally diverse content coverage, and demographic disaggregation of detection metrics. We connect these to the governance frameworks currently mandating watermarking deployment and show that watermarking is held to a lower fairness standard than the generative systems it is meant to govern. Our position is that evaluation must precede deployment, and that the same bias auditing requirements applied to AI models should extend to the verification layer.
format Preprint
id arxiv_https___arxiv_org_abs_2604_13776
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Who Gets Flagged? The Pluralistic Evaluation Gap in AI Content Watermarking
Nemecek, Alexander
Zafar, Osama
Xu, Yuqiao
Li, Wenbiao
Ayday, Erman
Computers and Society
Computation and Language
Cryptography and Security
Computer Vision and Pattern Recognition
Watermarking is becoming the default mechanism for AI content authentication, with governance policies and frameworks referencing it as infrastructure for content provenance. Yet across text, image, and audio modalities, watermark signal strength, detectability, and robustness depend on statistical properties of the content itself, properties that vary systematically across languages, cultural visual traditions, and demographic groups. We examine how this content dependence creates modality-specific pathways to bias. Reviewing the major watermarking benchmarks across modalities, we find that, with one exception, none report performance across languages, cultural content types, or population groups. To address this, we propose three concrete evaluation dimensions for pluralistic watermark benchmarking: cross-lingual detection parity, culturally diverse content coverage, and demographic disaggregation of detection metrics. We connect these to the governance frameworks currently mandating watermarking deployment and show that watermarking is held to a lower fairness standard than the generative systems it is meant to govern. Our position is that evaluation must precede deployment, and that the same bias auditing requirements applied to AI models should extend to the verification layer.
title Who Gets Flagged? The Pluralistic Evaluation Gap in AI Content Watermarking
topic Computers and Society
Computation and Language
Cryptography and Security
Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2604.13776