"WPS Hide Login" - Speed Up Your Site and Prevent Brute Force Attacks
The WPS Hide Login plugin will change the URL of your login page. This is a simple and lightweight way to stop bots and hackers trying to guess your login details using "Brute Force".
It will also speed up your site if you are getting a lot of these automated Brute Force attacks.
Find out more: https://en-gb.wordpress.org/plugins/wps-hide-login/