• Requirement

    1. 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
    2. 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].
  • Discussion

    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.

More Info

  • Title

    Unsuccessful Logon Attempts | Use of Alternate Authentication Factor
  • Family

    Access Control
  • NIST 800-53B Baseline(s)

    • Related NIST 800-53 ID


    NIST 800-53A Assessment Guidance

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