Preprint
Oct 2026
Sleeping Secrets: How Fine-Tuning Reawakens Privacy Risks in Language Models
Beyond adapting Large Language Models (LLMs) to specialized applications, fine-tuning has recently been shown to recover private information that is no longer accessible through direct queries. Previous fine-tuning recovery attacks, however, require genuine private supervision drawn from the same distribution, i.e., th...
Jian-Hong Li, Jia-Hao Chen, Yuwen Pu et al.
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