Changing WP-admin, adding that extra layer of security
Changing /WP-ADMIN url as your login is rather important as an extra added layer of security.
Install the plugin – WPS Hide Login. Then go to the settings tab > general and scroll to the bottom.
Enter a url extension to change to. For instance: www.example.com/wp-admin was the login for your site, now change it to www.example.com/system or /core . Simply change to something other than login or wp-admin.
Then click save.
If you have any questions, check out the support forums: https://wordpress.org/support/plugin/wps-hide-login/