AI glossary
PII redaction
PII redaction finds personal data, such as names, emails, phone numbers and addresses, in text and removes or masks it before the text is sent or stored.
Redaction can run before a prompt leaves your system, before a log is written, or both. "Email [email protected]" becomes "Email [EMAIL]".
Patterns catch structured data like emails and card numbers well; names and addresses need more, such as a trained recogniser, and none of it is perfect.
Redact as early as you can and keep the original only where it is truly needed. Data you never stored cannot leak.
Learn it hands-on
These free lessons teach it with commands to run in a lab and checked tasks. Read them whole with no account.