AC-9(2)

Requirement

Notify the user, upon successful logon, of the number of [Selection: successful logons; unsuccessful logon attempts; both] during [Assignment: organization-defined time period].

Discussion

Information about the number of successful and unsuccessful logon attempts within a specified time period allows the user to recognize if the number and type of logon attempts are consistent with the user's actual logon attempts.

NIST 800-53A Assessment Guidance

Examine

[SELECT FROM: Access control policy; procedures addressing previous logon notification; system design documentation; system configuration settings and associated documentation; system audit records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: System/network administrators; organizational personnel with information security responsibilities; system developers].

Test

[SELECT FROM: Mechanisms implementing access control policy for previous logon notification].

ID	Assessment Objectives
AC-09(02)	the user is notified, upon successful logon, of the number of <AC-09(02)_ODP[01] SELECTED PARAMETER VALUE> during <AC-09(02)_ODP[02] time period>.

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