← SC-40
SC-40(1) SC · System and Communications Protection

Electromagnetic Interference

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0 Overlays 3 Related Controls
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Requirements NIST SOURCE

Implement cryptographic mechanisms that achieve [level of protection] against the effects of intentional electromagnetic interference.

Discussion (NIST Supplemental Guidance)

The implementation of cryptographic mechanisms for electromagnetic interference protects systems against intentional jamming that might deny or impair communications by ensuring that wireless spread spectrum waveforms used to provide anti-jam protection are not predictable by unauthorized individuals. The implementation of cryptographic mechanisms may also coincidentally mitigate the effects of unintentional jamming due to interference from legitimate transmitters that share the same spectrum. Mission requirements, projected threats, concept of operations, and laws, executive orders, directives, regulations, policies, and standards determine levels of wireless link availability, cryptography needed, and performance.

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 SC-40(1) 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. level of protection to be employed against the effects of intentional electromagnetic interference is defined;
  2. cryptographic mechanisms that achieve <SC-40(01)_ODP level of protection> against the effects of intentional electromagnetic interference are implemented.

Examine

[SELECT FROM: System and communications protection policy; access control policy and procedures; procedures addressing wireless link protection; system design documentation; wireless network diagrams; system configuration settings and associated documentation; system architecture; system communications hardware and software; security categorization results; system audit records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: System/network administrators; organizational personnel with information security responsibilities; system developer; organizational personnel installing, configuring, and/or maintaining the system; organizational personnel authorizing, installing, configuring, and/or maintaining internal and external wireless links].

Test

[SELECT FROM: Cryptographic mechanisms enforcing protections against effects of intentional electromagnetic interference].

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for SC-40(1). 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 communications protection policy
  • access control policy and procedures
  • system security plan

Configuration

  • system design documentation
  • system configuration settings and associated documentation
  • system architecture

Testing

  • Cryptographic mechanisms enforcing protections against effects of intentional electromagnetic interference

Other Records

  • procedures addressing wireless link protection
  • wireless network diagrams
  • system communications hardware and software
  • security categorization results
  • system audit records
  • other relevant documents or records