The CA-TSS NPPTHRESH Control Option must be properly set. (Cat II impact)
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.
From the ISPF Command Shell enter: TSS MODIFY STATUS If the NPPTHRESH Control Option value is not set to NPWRTHRESH(02), this is a finding.
Evaluate the impact associated with implementation of the control option. Develop a plan of action to implement the control option setting as specified following and proceed with the change. NPPTHRESH(02)
The information system enforces the organization-defined limit of consecutive invalid logon attempts by a user during the organization-defined time period.
Unsuccessful Logon Attempts