Wordpress is used on many websites and is an extremely popular script, due to its many possibilities. Unfortunately, it also is a popular target for hackers.
Hackers try to login to the admin environment of Wordpress using common passwords. It is important to change the Wordpress admin page URL, preventing a bruteforce attack from being performed.
Go to http://managewp.com/change-your-wordpress-login-url for information and instructions on how to secure your Wordpress admin page.