cyberstrikeus SC-28(2) Offline Storage
Enhancement of: SC-28
High-Level Description
Family: System and Communications Protection (SC) Framework: NIST SP 800-53 Rev 5
Removing organizational information from online storage to offline storage eliminates the possibility of individuals gaining unauthorized access to the information through a network. Therefore, organizations may choose to move information to offline storage in lieu of protecting such information in online storage.
What to Check
- Verify SC-28(2) Offline Storage is documented in SSP
- Confirm control is operating effectively
- Review evidence of continuous monitoring for SC-28(2)
- Verify enhancement builds upon base control SC-28
How to Test
Step 1: Review Documentation
Examine the System Security Plan (SSP) and related artifacts for SC-28(2) 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
| Tool | Purpose | Usage |
|---|---|---|
| cloud-audit-mcp | Check encryption and network controls | cloud_audit_encryption |
| nmap | Network scanning | nmap -sV --script ssl-enum-ciphers |
Remediation Guide
Control Statement
Remove the following information from online storage and store offline in a secure location: [organization-defined].
Implementation Guidance
Removing organizational information from online storage to offline storage eliminates the possibility of individuals gaining unauthorized access to the information through a network. Therefore, organizations may choose to move information to offline storage in lieu of protecting such information in online storage.
Risk Assessment
| Finding | Severity | Impact |
|---|---|---|
| SC-28(2) Offline Storage not implemented | High | System and Communications Protection |
| SC-28(2) partially implemented | Medium | Incomplete System and Communications Protection |
CWE Categories
| CWE ID | Title |
|---|---|
| CWE-311 | Missing Encryption of Sensitive Data |
References
- NIST SP 800-53 Rev 5 - SC-28(2)
- 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