Attackers can swap hidden account IDs in LLM watermarks without the secret key

A new attack, called targeted displacement, rewrites watermarked text so that the decoder recovers an arbitrary chosen message, verified on five schemes and four language models.

Academic
Paweł Batorski · Przemysław Spurek · Paul Swoboda

Heinrich Heine University Düsseldorf · Jagiellonian University · IDEAS Research Institute

Research Digest··2 min read
Batorski et al.

The authors target distortion-based watermarking schemes, including the popular green-list and red-list methods and their multi-bit variants.

Why this paper

From Heinrich Heine University Düsseldorf and 2 others

In one line

Attackers can alter the message embedded in multi-bit LLM watermarks without the secret key by rewriting text.

What we could check

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