SI-21 Information Refresh

System and Information Integrity

New in Rev 5

Description

Refresh [Assignment: organization-defined parameters] at [Assignment: organization-defined parameters] or generate the information on demand and delete the information when no longer needed.

Supplemental Guidance

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.

Changes from Rev 4

New control in Rev 5.

Compliance Mappings

BSI IT-Grundschutz

APP.3.1

FINMA Circular 2023/1

IV.E(84)

EU DORA

Art.13(1)

RBI CSF

Annex1.15

IOSCO Cyber Resilience

LE-3SA-1