SI-21 Information Refresh
Not in a baseline
Review SI-21
1. Set its parameters
No parameters to set for SI-21.
2. Record its status
Refresh [Assignment: organization-defined information] at [Assignment: organization-defined frequencies] or generate the information on demand and delete the information when no longer needed.
Discussion
Retaining information for longer than it is needed makes it an increasingly valuable and enticing target for adversaries. Keeping information available for the minimum period of time needed to support organizational missions or business functions reduces the opportunity for adversaries to compromise, capture, and exfiltrate that information.
ISO/IEC 27001:2022 Crosswalk
A.8.10