service.secure_login.login_attempts
Less than 1 minute
Syntax
service.secure_login.login_attempts = "number"
The default value is: 8
Definition
Define how many times a user can enter an invalid password before they are temporarily locked. The duration of the lock depends on the service.secure_login.time_window configuration. The default duration is 20 minutes, so if the user enters invalid password eight times within the first 60 seconds, then they'll be locked out for the remaining 19 minutes.
AAM, under the hood uses WordPress core authenticate hook to control login attempts.