SI-1 is the policy control for the System and Information Integrity family. Every family in 800-53 starts with one, and auditors usually ask for it first. It asks you to develop, document and disseminate a policy and procedures, designate an official to manage them, and review and update them on a schedule and after defined events.
800-53 binds US federal systems and, through contracts, their suppliers. For other companies it is a reference. The SI family covers flaw remediation, malicious code protection, monitoring, input validation and error handling, so the policy ties those together.
What it means in practice
The policy has two stated parts. It must address purpose, scope, roles, responsibilities, management commitment, coordination among organizational entities and compliance. And it must be consistent with the laws and standards that apply to you. The procedures describe how the controls are actually carried out.
NIST says the policy can sit inside a general security and privacy policy or be several documents. Organization level policy is generally preferable to one per system, because it can remove the need for system specific versions.
Beyond writing, there are three duties. Disseminate it to the people who need it. Name an owner. Review it on a set cycle and after events you define, such as a significant incident or a major change.
Evidence to collect
- The policy document with version, date, approver and scope.
- The procedures or runbooks for the SI controls you implement.
- The name and role of the designated owner.
- Distribution proof: acknowledgment records, intranet publish logs or onboarding checklist entries.
- Review history, showing the last review and the trigger for each update.
- A mapping from policy statements to the controls and the evidence that backs them.
Common gaps
A policy copied from a template that describes tools you do not run. No named owner. Last reviewed three years ago. Staff who have never seen it. Procedures that do not exist, so the policy promises what nobody does. A policy that covers scanning and patching but says nothing about input validation or error handling.
How to implement it
- Decide what SI covers for you: patching and vulnerability remediation, malware defense, monitoring, input validation, error handling, retention and failure tolerance.
- Write the policy in plain language, a few pages. State what is required, not how a particular tool does it.
- Write procedures separately, so tools can change without a policy revision.
- Name an owner and a backup.
- Publish it, require acknowledgment from new hires and annually, and keep the records.
- Calendar an annual review, and add triggers for incidents and major architecture changes.
- For every policy statement, point to the evidence that shows it is happening.
That last step is where audits are won. The framework mapping demo shows how one piece of evidence can support several controls, which keeps policy and proof together. Mappings between frameworks vary by source, so check the mapping you rely on before quoting it to an auditor.
Click through it at your own pace, or open it full screen.
Quick check
What three things beyond writing does SI-1 require?
Disseminate the policy, designate an official to manage it, and review and update it on a schedule and after defined events.
Can one organization wide policy cover the family?
Yes. NIST says organization level policy is generally preferable and may remove the need for system specific policies.
What do procedures add?
They describe how the policy is carried out for each control, so tools and teams can change without rewriting the policy.
