SIMM Changes

August 2025

Section Action Type Changes
SIMM 19A.5 Change Added references for project delivery lifecycle.
SIMM 5335-B New New SIMM that outlines minimum functional capabilities of continuous monitoring programs and defines the types and prioritization of logs based on their relevance to risk management, regulatory requirements, and business objectives.
SIMM 5335-C New New SIMM that Maps NIST controls to the corresponding MITRE ATT&CK coverage.
SIMM 5340-C Change Minor changes to align templates and requirements.
SIMM 141 Change Verbiage updated to reference SIMM 5335-B Continuous Security Monitoring and Event Management Standard.
SIMM 5305-F Change Added references for Labor Relations Engagement.
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