The CA-TSS NPPTHRESH Control Option must be properly set.

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)