SC-15(1)_physical-or-logical-disconnect

SC-15(1) Physical or Logical Disconnect

Enhancement of: SC-15

High-Level Description

Family: System and Communications Protection (SC) Framework: NIST SP 800-53 Rev 5

Failing to disconnect from collaborative computing devices can result in subsequent compromises of organizational information. Providing easy methods to disconnect from such devices after a collaborative computing session ensures that participants carry out the disconnect activity without having to go through complex and tedious procedures. Disconnect from collaborative computing devices can be manual or automatic.

What to Check

• Verify SC-15(1) Physical or Logical Disconnect is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for SC-15(1)
• Verify enhancement builds upon base control SC-15

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for SC-15(1) implementation details. Verify the organization has documented how this control is satisfied.

Step 2: Validate Implementation

# For cloud environments, use cloud-audit-mcp tools
# For on-premises, review system configurations directly

# Example: Check if account management policies exist
grep -r "account.management\|access.control" /etc/security/ 2>/dev/null

Step 3: Test Operating Effectiveness

Verify the control is actively functioning, not just documented. Check logs, configurations, and operational evidence.

Tools

Remediation Guide

Control Statement

Provide [organization-defined] disconnect of collaborative computing devices in a manner that supports ease of use.

Implementation Guidance

Failing to disconnect from collaborative computing devices can result in subsequent compromises of organizational information. Providing easy methods to disconnect from such devices after a collaborative computing session ensures that participants carry out the disconnect activity without having to go through complex and tedious procedures. Disconnect from collaborative computing devices can be manual or automatic.

Risk Assessment

CWE Categories

References

• NIST SP 800-53 Rev 5 - SC-15(1)
• NIST SP 800-53A Rev 5 (Assessment Procedures)
• NIST SP 800-53 Rev 5 Full Catalog

Checklist

• Control documented in SSP
• Implementation evidence collected
• Operating effectiveness validated
• Continuous monitoring in place
• Related controls (none) reviewed