Security issue of WordPrss is most important. There is a lot of discussion going about WordPress Security. Is your WordPress secured? Here is a tip that you can apply on your blog. If someone is trying to login into you WordPress blog, but fails, WordPress display a message to let you know what happened. Sure, it may be useful to you, but it is for sure also useful to potential blog hackers.
To remove theses messages, simply open your theme folder and find functions.php file and paste the following code.

add_filter(‘login_errors’,create_function(‘$a’, “return null;”));

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