3.10.6
PE.L2-3.10.6 · Level 2
Enforce safeguarding measures for CUI at alternate work sites.
NIST SP 800-171 Rev 2 · §3.10.6
Enforce safeguarding measures for CUI at alternate work sites.
Assessment objectives
From NIST SP 800-171A · 2 objectives must be met to satisfy this control
Examine
[SELECT FROM: Physical and environmental protection policy; procedures addressing alternate work sites for personnel; security plan; list of safeguards required for alternate work sites; assessments of safeguards at alternate work sites; other relevant documents or records].
Interview
[SELECT FROM: Personnel approving use of alternate work sites; personnel using alternate work sites; personnel assessing controls at alternate work sites; personnel with information security responsibilities].
Test
[SELECT FROM: Organizational processes for security at alternate work sites; mechanisms supporting alternate work sites; safeguards employed at alternate work sites; means of communications between personnel at alternate work sites and security personnel].
Examine
[SELECT FROM: Physical and environmental protection policy; procedures addressing alternate work sites for personnel; security plan; list of safeguards required for alternate work sites; assessments of safeguards at alternate work sites; other relevant documents or records].
Interview
[SELECT FROM: Personnel approving use of alternate work sites; personnel using alternate work sites; personnel assessing controls at alternate work sites; personnel with information security responsibilities].
Test
[SELECT FROM: Organizational processes for security at alternate work sites; mechanisms supporting alternate work sites; safeguards employed at alternate work sites; means of communications between personnel at alternate work sites and security personnel].
What we look for in practice
The following are placeholder notes that should be refined based on practice experience.
What assessors look for in practice. Documented evidence that this control is implemented across all CUI-handling systems within scope. Specific artifacts vary, but expect requests for written procedures, system configurations, and operational records demonstrating the control is active.
Common failure patterns. Typical issues include incomplete documentation, inconsistent implementation across systems, and missing periodic review records. Refine this section as your practice accumulates direct assessment experience.
Strong evidence looks like. Formal policy referencing this control, technical configurations demonstrating enforcement, periodic review logs with sign-off, and procedures for handling exceptions.
Scoring and POA&M context. 1-point control under the DoD Assessment Methodology. Lower scoring impact, but still required for full compliance. POA&M-eligible — deferral up to 180 days is allowed under conditional certification per 32 CFR 170.21.