Assessment Objective

Determine if:

• AC-07(04)(a) [Assignment: authentication factors] that are different from the primary authentication factors are allowed to be used after the number of organization-defined consecutive invalid logon attempts have been exceeded;
• AC-07(04)(b) a limit of [Assignment: number] consecutive invalid logon attempts through the use of the alternative factors by the user during a [Assignment: time period] is enforced.

Assessment Methods

Examine

• Access control policy
• procedures addressing unsuccessful logon attempts for primary and alternate authentication factors
• system design documentation
• system configuration settings and associated documentation
• system audit records
• system security plan
• other relevant documents or records

Interview

• System/network administrators
• organizational personnel with information security responsibilities

Test

• Mechanisms implementing access control policy for unsuccessful logon attempts

Tichete legate

• NIST -

  https://csrc.nist.gov/pubs/sp/800/53/r5/upd1/final