Beyond CMMC Level 1
The free web app covers the 17 CMMC Level 1 practices. This requirement is part of the full NIST 800-171 set — get the desktop app to work on all 110 requirements with SPRS scoring. Previously saved data is shown read-only below, and your data always remains exportable in full.
Get the desktop appSecurity Requirements for 03.03.03 Event Review
The intent of this requirement is to periodically re-evaluate which logged events will continue to be included in the list of events to be logged. The event types that are logged by organizations may change over time. Reviewing and updating the set of logged event types periodically is necessary to ensure that the current set remains necessary and sufficient.
Assessment GuidanceExamine 0/8
How an assessor determines this requirement is met. Source: CMMC Assessment Guide – Level 2, Version 2.13 (NIST SP 800-171 Rev. 2).
Discussion
This requirement is focused on the configuration of the auditing system, not the review of the audit records produced by the selected events. The review of the audit logs is covered under AU.L2-3.3.5 and AU.L2-3.3.6.
Example You are in charge of IT operations for a company that processes CUI and are responsible for identifying and documenting which events are relevant to the security of your company’s systems. Your company has decided that this list of events should be updated annually or when new security threats or events have been identified, which may require additional events to be logged and reviewed [a]. The list of events you are capturing in your logs started as the list of recommended events given by the manufacturers of your operating systems and devices, but it has grown from experience. Your company experiences a security incident, and a forensics review shows the logs appear to have been deleted by a remote user. You notice that remote sessions are not currently being logged [b]. You update the list of events to include logging all VPN sessions [c].
Assessment Methods
Not all of the evidence listed is required to meet this requirement — check the items your organization has collected.
- Personnel with audit and accountability responsibilities
- Personnel with information security responsibilities
- Mechanisms supporting review and update of logged event types
Potential Assessment Considerations
- Do documented processes include methods for determining when to review logged event types (i.e., regular frequency, after incidents, after major system changes) [a]?
- Do documented processes include methods for reviewing event types being logged (i.e., based on specific threat, use case, retention capacity, current utilization, and/or newly added system component or functionality) [b]?