The operating system must audit all account enabling actions.
Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to enable a new or disabled account. Auditing account modification actions provides logging that can be used for forensic purposes. To address access requirements, many operating systems can be integrated with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements.
Configure the operating system to automatically audit account enabling actions.
Verify the operating system automatically audits account enabling actions. If it does not, this is a finding.