Unverified50% confidenceTradeoffExact time
Placeholder mapping is essentially a reversible pseudonymization technique; its technical challenge lies in the possibility that AI may reference placeholders in a transformed way in its responses, causing reverse restoration to fail.
1
Sources
50%
Confidence
Long-term
Relevance
8/4/2026
First Seen
Sources
PISIGuard：与AI对话时守护你的隐私信息
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