AC-7(4): Use of Alternate Authentication Factor
Control Family:
Parent Control:
Threats Addressed:
Baselines:
(Not part of any baseline)
Control is new to this version of the control set.
Control Statement
- 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
- 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].
Supplemental Guidance
The use of alternate authentication factors supports the objective of availability and allows a user who has inadvertently been locked out to use additional authentication factors to bypass the lockout.