Please have an ability to customize delay after entering 5 incorrect passwords.

Currently, on version 4.2.5 after 5 incorrect password attempts it shows:

"Account is blocked for 30 seconds."

Every next incorrect attempt (6th, 7th) will enter immediately "30 seconds" delay which is good already.

An upgrade to this can be:

• If more failed attempts then longer are the next delay.
• Reset the clock after maybe N minutes of no attempts.