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Ning-Hui Li

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#artificial intelligence Preprint Aug 2026

PII-TRACE: A Benchmark for Context-Aware PII Detection in Multi-Turn LLM Conversations

LLM assistants and agentic systems log long multi-turn conversations. AI providers often scan these conversations for Personally Identifiable Information (PII) and mask the PII before storing or processing conversation data. Yet most PII detectors and benchmarks target self-contained records rather than cross-turn eval...

Kai-Yuan Zhang, Chuan Wang, Joey Zhong et al. · 0 citations
Preprint Sep 2026

Privacy Leakage from a Thousand Words: Millipixel Location Recovery from Dot Maps

This paper systematically analyzes the privacy risks associated with dot maps and presents AutoLocate, an automated framework for high-precision location recovery that achieves average recovery errors as low as 1 meter on small-scale maps of the United States, over 200x more accurate than existing approaches.

Yuntao Du, Tanishq Pauskar, Hao Wang et al. · 0 citations

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