SI-22 Information Diversity
a. Identify the following alternative sources of information for organization-defined essential functions and services: organization-defined alternative information sources; and b. Use an alternative information source for the execution of essential functions or services on organization-defined systems or system components when the primary source of information is corrupted or unavailable.
Source: NIST SP 800-53 Rev 5, SI-22. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open NIST SP 800-53 Rev 5 in the compliance library.
Base controls and their enhancements. Which apply follows the baseline you are assessed against (for example FedRAMP Moderate or High, or the low, moderate and high baselines of SP 800-53B). Text in square brackets is a parameter your organisation sets.
These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.
system holds itEvidence a system already holds
- Test of Automated methods and mechanisms to convert information from an analog to digital medium · Document repository
periodic reviewEvidence produced at each review
none for this control
governing documentDocuments that govern the control
- System and information integrity policy · Policy repository / GRC workspace
- System and information integrity procedures · Policy repository / GRC workspace
- Personally identifiable information processing policy · Policy repository / GRC workspace
- System design documentation · Document repository
- System configuration settings and associated documentation · Policy repository / GRC workspace
- List of information sources · Document repository
- System security plan · Policy repository / GRC workspace
- Privacy plan · Policy repository / GRC workspace
First move
Common gaps auditors find
- Alternative information sources for the defined essential functions were never identified
- Alternative sources are not used when primary sources are unavailable or corrupted
Do this for your whole sheet
Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.
Build my evidence sheet