Fine-tuning on one author's books unlocks verbatim recall of 30+ copyrighted works, paper finds

tuvllms · x · 2026-10-09

A new AI & copyright paper (COLM Oral Spotlight by CMU, Stony Brook and Columbia Law) challenges the claim that safety alignment prevents LLMs from reproducing copyrighted text. Fine-tuning on a simple writing task can erode that protection, and fine-tuning on a single author's books (e.g., Murakami) unlocks verbatim recall of copyrighted works from 30+ unrelated authors, at rates up to 90% — with direct implications for ongoing copyright litigation.

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