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cs.CR2026
Mind the Hook: Source-Level Auditing of Privacy Defenses in Retrieval-Augmented Generation
Yanhang Li, Zhichao Fan, Zexin Zhuang
Black-box privacy scores for retrieval-augmented generation (RAG) are difficult to interpret unless the audited defense's active pipeline hook is known. We propose an active-path a…
cs.CR2026
Probe Choice Changes Canary-Memorization Verdicts: Three Post-Hoc Disagreement Case Studies in a Text-Dominant LoRA-Tuned Autoregressive Testbed
Zhichao Fan, Zexin Zhuang, Yanhang Li
We audit a fixed prefix-window mean-NLL memorization probe (K=20) on a Qwen2.5-VL-7B canary testbed and report three post-hoc cases where it disagrees with full-span secret NLL or…