Author

Maryam Alshehyari

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#machine learning Preprint Sep 2026

CopyShield: A Cross-Level Benchmark of Copyright Defenses in LLMs

Large language models can reproduce memorized text verbatim, yet copyright defenses are usually evaluated under incompatible protocols. We introduce CopyShield, a controlled benchmark comparing three representative defenses at distinct intervention levels: contrastive decoding (output), Direct Preference Optimization (...

Maryam Alshehyari, Dushyant Singh Chauhan, Samuele Poppi et al. · 0 citations