Author

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

Dot maps, which visualize individual data points as dots over a geographic region, are widely used across diverse domains to represent spatial patterns in sensitive data. However, the understanding of the privacy risks associated with dot maps remains limited, particularly for maps covering large geographic areas. In t...

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