← SI-10
SI-10(3) SI · System and Information Integrity

Predictable Behavior

LOW MODERATE HIGH
1 Overlay 0 Related Controls
Graph
Export ▾

Requirements NIST SOURCE

Verify that the system behaves in a predictable and documented manner when invalid inputs are received.

Discussion (NIST Supplemental Guidance)

A common vulnerability in organizational systems is unpredictable behavior when invalid inputs are received. Verification of system predictability helps ensure that the system behaves as expected when invalid inputs are received. This occurs by specifying system responses that allow the system to transition to known states without adverse, unintended side effects. The invalid inputs are those related to the information inputs defined by the organization in the base control ( SI-10).

Implementation Guidance

Engineering Interpretation

Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.

No engineering interpretation has been authored for SI-10(3) yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.

Assessment

NIST SP 800-53A REV 5.2.0

Assessment Objectives

  1. the system behaves in a predictable manner when invalid inputs are received;
  2. the system behaves in a documented manner when invalid inputs are received.

Examine

[SELECT FROM: System and information integrity policy; system and information integrity procedures; procedures addressing information input validation; system design documentation; system configuration settings and associated documentation; system audit records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel responsible for information input validation; organizational personnel with information security responsibilities; system/network administrators; system developer].

Test

[SELECT FROM: Automated mechanisms supporting and/or implementing predictable behavior when invalid inputs are received].

Overlays

Showing the OT/ICS overlay for the parent control SI-10 — see the SI-10(3) entries within each baseline below.

OT/ICS Overlay SP 800-82r3

NIST SP 800-82r3 Appendix F, Table 22. Blank baseline means the control/control enhancement is not selected in that initial OT baseline.

LOW

Not applicable at this tier.

MODERATE

  • Base control: Included (matches standard baseline)

HIGH

  • Base control: Included (matches standard baseline)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for SI-10(3). This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.

Learn more about STIG/CCI integration →

Evidence

Potential Evidence — Derived

Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.

Policy

  • System and information integrity policy
  • system security plan

Configuration

  • system design documentation
  • system configuration settings and associated documentation

Testing

  • Automated mechanisms supporting and/or implementing predictable behavior when invalid inputs are received

Other Records

  • system and information integrity procedures
  • procedures addressing information input validation
  • system audit records
  • other relevant documents or records