There are security risks to using a well known application using the default install configuration. All of the files and directories are named the same for mine, yours and everybody else. A hacker knows exactly where to reach your login page to try to get into your admin panel. This script will ask you for a new name to give to your wp-admin folder and will automate the process of changing associated files and folders.
I didn’t look hard enough to see if your WP version mattered and also there is no replacement for using a smart login name and password.