What evidence do auditors commonly ask for on SI-10 Information Input Validation?

SSP SI-10 statement listing information inputs validated and the validation rules applied; Input validation code or WAF rules and test results for malformed input; Input validation standards and code review checklist; Security monitoring alert tuning records; Patch management policy with severity based SLAs; Patch deployment reports across server, endpoint, and network estates.

What is the most common gap auditors find on SI-10?

Alert backlog exceeds analyst capacity leading to triage delays

FedRAMP Moderate (NIST SP 800-53 Rev 5 baseline) · SI - System and Information Integrity

`SI-10` Information Input Validation

Check validity of FedRAMP-defined information inputs.

Source: FedRAMP Moderate (NIST SP 800-53 Rev 5 baseline), SI-10. 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 FedRAMP Moderate (NIST SP 800-53 Rev 5 baseline) in the compliance library.

A FedRAMP baseline is a subset of NIST SP 800-53 Rev 5, enhancements included.

artefacts

held by a system

at each review

moderate

to go live

SIEM / log platform

where the evidence lives

teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

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

Security monitoring alert tuning records · SIEM / log platform
Patch deployment reports across server, endpoint, and network estates · Vulnerability scanner / patch tooling

periodic reviewEvidence produced at each review

Input validation code or WAF rules and test results for malformed input · Source control / CI pipeline

governing documentDocuments that govern the control

SSP SI-10 statement listing information inputs validated and the validation rules applied · Document repository
Input validation standards and code review checklist · Policy repository / GRC workspace
Patch management policy with severity based SLAs · Policy repository / GRC workspace

First move

Start with the 2 of 6 artefacts that already live in a system (SIEM / log platform); keep the periodic reviews but log each one as a dated record with a named reviewer.

Common gaps auditors find

Alert backlog exceeds analyst capacity leading to triage delays
Critical patches deployed beyond the policy SLA without exception
EDR coverage gaps on legacy operating systems

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

SI-8(2) Spam Protection | Automatic Updates (SI-8(2)) · SI-11 Error Handling