AC-9(1) Unsuccessful Logons
Control enhancement of AC-9 Previous Logon Notification
Control
Notify the user, upon successful logon, of the number of unsuccessful logon attempts since the last successful logon.
Discussion
Information about the number of unsuccessful logon attempts since the last successful logon allows the user to recognize if the number of unsuccessful logon attempts is consistent with the user’s actual logon attempts.
Need AC-9(1) implemented and evidenced?
We assess where you stand against this control, document the gap, and build the remediation plan your auditor and your board will both accept.
Control catalog and framework text on this page is reproduced from official NIST publications — a public-domain work of the U.S. Government (17 U.S.C. §105). Maverc commentary, groupings, and readiness guidance are our own and are not part of any NIST publication.
