AC-9(4)

Requirement

Notify the user, upon successful logon, of the following additional information: [Assignment: organization-defined additional information].

Discussion

Organizations can specify additional information to be provided to users upon logon, including the location of the last logon. User location is defined as information that can be determined by systems, such as Internet Protocol (IP) addresses from which network logons occurred, notifications of local logons, or device identifiers.

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(04)	the user is notified, upon successful logon, of <AC-09(04)_ODP additional information>.

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