IA-1 is the policy control for the Identification and Authentication family. It does not tell you how strong a password must be. It tells you to write down the rules, say who owns them and keep them current. Every other IA control then has something to point to.
NIST 800-53 binds federal systems and, through contracts, some suppliers. For a company outside that group it is still a common reference, and the policy and procedure controls in each family follow the same pattern.
What the control asks
Develop, document and disseminate an identification and authentication policy. It must cover purpose, scope, roles, responsibilities, management commitment, coordination among teams and compliance, and it must be consistent with applicable laws and regulations. Also write procedures that put the policy into practice. Name an official to manage both. Review and update them at a frequency you set and after events you define.
What it means in practice
The NIST guidance notes that the policy covers the controls in the IA family implemented in systems and across the organization. It also says security and privacy programs should collaborate on it. In a smaller company that can be one page owned by the head of security or IT, with procedures kept in the places where staff do the work, such as the SSO admin runbook and the onboarding checklist.
Evidence to collect
- The current policy, with version, approval date and approver.
- Procedures: how accounts are created, how authenticators are issued and reset, how devices and services are identified.
- Proof of dissemination: acknowledgments, intranet publication or training records.
- Review history: the last review date and what changed.
- The named owner and their role description.
Common gaps
A policy that says "strong passwords" while the identity provider enforces something else. A policy that has no owner. A review date that passed a year ago. Procedures that exist only in one admin's head.
How to implement it
Write the policy short and testable. Each statement should be something you can check in a system setting or a ticket. Map each IA control you implement to the policy line that covers it. Set an annual review on the calendar and also review after a change of identity provider.
If you map one policy across several frameworks, mappings vary by framework and version, so check each source before you claim coverage.
Click through it at your own pace, or open it full screen.
Quick check
What turns IA-1 from paperwork into evidence?
An owner, a dated approval, proof the policy reached staff, and a review record that shows it is kept current.
