PII Redaction

In depth

PII redaction finds personally identifiable information, such as names, email addresses, phone numbers, and card or ID numbers, and removes or replaces it before the data reaches a model, a log, or a third party. Open-source tools like Presidio detect PII with named entity recognition, regular expressions, rule-based logic, and checksums, then mask it or swap in placeholders. Presidio's docs warn that automated detection cannot guarantee it finds every piece of sensitive data. Treat redaction as one layer that works alongside access controls and retention limits.

Primary source: github.com