DE.CM-03 Personnel Activity Monitoring - NIST CSF 2.0 Checklist

DE.CM-03 requires organizations to personnel activity and technology usage are monitored to find potentially adverse events. This NIST CSF 2.0 control falls under the Detect (DE) function and the Continuous Monitoring category. Use this checklist to verify implementation and prepare evidence for auditors.

Control Details

Control ID: DE.CM-03
Title: Personnel Activity Monitoring
Function: Detect (DE)
Category: Continuous Monitoring
Framework: NIST CSF 2.0

Personnel activity and technology usage are monitored to find potentially adverse events.

Personnel activity and technology usage are monitored to find potentially adverse events. This includes monitoring user behavior for anomalies that could indicate insider threats or compromised accounts.

Why This Matters

Insider threats and compromised user accounts are difficult to detect with traditional perimeter defenses. User behavior analytics identify anomalous activity that rule-based systems miss.

Implementation Checklist

Use this checklist to verify your organization meets the requirements of DE.CM-03.

Implement user behavior analytics or UEBA capabilities
Monitor privileged user activity with enhanced logging
Alert on anomalous login patterns such as impossible travel or off-hours access
Track large data transfers and unusual data access patterns
Monitor for use of unauthorized tools and applications
Review personnel monitoring alerts with appropriate privacy considerations

Evidence an Auditor Expects

Prepare the following documentation and artifacts to demonstrate compliance with DE.CM-03 during an audit.

UEBA tool deployment documentation and detection rules
Privileged activity monitoring configuration and sample logs
Anomalous activity alert examples and investigation records
Data loss prevention rule sets and alert reports
Privacy impact assessment for personnel monitoring

Common Gaps We Find

Based on our penetration testing and risk assessment engagements, these are the gaps organizations most frequently have with DE.CM-03.

Privileged user activity is logged but never reviewed or analyzed
No user behavior analytics capability is deployed
Personnel monitoring program lacks a privacy impact assessment

FAQ

What does DE.CM-03 require?

DE.CM-03 (Personnel Activity Monitoring) requires that personnel activity and technology usage are monitored to find potentially adverse events. This includes monitoring user behavior for anomalies that could indicate insider threats or compromised accounts. This control is part of the NIST CSF 2.0 Detect function under the Continuous Monitoring category.

How do I prove compliance with DE.CM-03?

To demonstrate compliance with DE.CM-03, prepare the following evidence: UEBA tool deployment documentation and detection rules; Privileged activity monitoring configuration and sample logs; Anomalous activity alert examples and investigation records. Auditors will verify that these artifacts exist and reflect current operational practices.

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