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SI-8(3) SI · System and Information Integrity

Continuous Learning Capability

LOW MODERATE HIGH
1 Overlay 0 Related Controls
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Requirements NIST SOURCE

Implement spam protection mechanisms with a learning capability to more effectively identify legitimate communications traffic.

Discussion (NIST Supplemental Guidance)

Learning mechanisms include Bayesian filters that respond to user inputs that identify specific traffic as spam or legitimate by updating algorithm parameters and thereby more accurately separating types of traffic.

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-8(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. spam protection mechanisms with a learning capability are implemented to more effectively identify legitimate communications traffic.

Examine

[SELECT FROM: System and information integrity policy; system and information integrity procedures; procedures addressing spam protection; spam protection mechanisms; 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 spam protection; organizational personnel with information security responsibilities; system/network administrators; system developer].

Test

[SELECT FROM: Organizational processes for spam protection; mechanisms supporting and/or implementing spam protection mechanisms with a learning capability].

Overlays

Showing the OT/ICS overlay for the parent control SI-8 — see the SI-8(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)
  • Included: (2)

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (2)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for SI-8(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

  • Organizational processes for spam protection
  • mechanisms supporting and/or implementing spam protection mechanisms with a learning capability

Other Records

  • system and information integrity procedures
  • procedures addressing spam protection
  • spam protection mechanisms
  • system audit records
  • other relevant documents or records