NIST 800-53 rev.5/Access Control/75 of 1011
AC-07 (04)Unsuccessful Logon Attempts | Use of Alternate Authentication Factor
Control family: Access Control
Control description
(a) Allow the use of [Assignment: organization-defined authentication factors] that are different from the primary authentication factors after the number of organization-defined consecutive invalid logon attempts have been exceeded; and
(b) Enforce a limit of [Assignment: organization-defined number] consecutive invalid logon attempts through use of the alternative factors by a user during a [Assignment: organization-defined time period].
How to implement
Coming in phase 2Step-by-step guidance for implementing this control on Microsoft Azure, using services such as Azure Policy, Microsoft Defender for Cloud and Entra ID. It will be matched to your environment.