The organization reviews and updates the baseline configuration of the information system:
(a) [Assignment: organization-defined frequency];
(b) When required due to [Assignment organization-defined circumstances]; and
(c) As an integral part of information system component installations and upgrades.
b. baseline configuration changes or as events dictate such as changes due to USCYBERCOM tactical orders/ directives or cyber attacks.
DoD RMF TAG
CM-2 (1) (a) Guidance: Significant change is defined in NIST Special Publication 800-37 Revision 1, Appendix F, page F-7.