# PII redaction

A type of guardrail that removes or masks personal data in text passing through a system, usually before it reaches a model or log.

Also called: Data masking, PII masking, De-identification

Kind of: Guardrail

Related: Data exfiltration

Source: https://redfinchadvisory.com/lexicon/pii-redaction (version 1.0, changed 2026-10-21)