A privacy impact assessment (PIA) is a structured look at how a system handles personal data, done before the data flows. RA-8 Privacy Impact Assessments requires one at defined points. NIST 800-53 binds US federal systems, and others by contract. For everyone else it is a reference, and it resembles the data protection impact assessments some privacy laws ask for.
What it means in practice
The statement asks you to conduct PIAs before two events: developing or procuring information technology that processes personally identifiable information, and starting a new collection of PII that will be processed with technology and that lets you contact a specific person, with a condition about identical questions posed to ten or more persons. Read the exact statement in the NIST catalog if your work touches that second trigger.
The guidance describes a PIA as both an analysis and a formal document. It determines the privacy risks of a system or activity and evaluates ways to reduce them. It should be clear and specific enough to show that you considered privacy and built protections into the design.
Evidence to collect
- A PIA template and the criteria that trigger one.
- Completed PIAs for systems and vendors that process personal data.
- Approval records and the mitigations that followed.
- Dates showing the PIA came before launch or purchase.
Common gaps
- PIAs are written after the system is live.
- Vendor purchases skip the process.
- The assessment lists risks but no action follows.
How to implement it
Add a PIA question to your project intake and vendor onboarding. If the answer is yes, the PIA is a gate. Keep the template short: data collected, purpose, authority, retention, sharing, risks, mitigations, approver.
Quick check
Do we need a PIA for every feature?
No. Run one when a project develops or buys technology that processes personal data, or starts a new collection. Small changes to existing flows can use a lighter review.
