A well-known tip in the blogosphere regarding WordPress is to remove the WordPress version from your meta-tags that are automatically generated by your WordPress blog.
This information can be used by potential hackers to pinpoint which version of WordPress you are using, and can help them find an exploit to start hacking your website.
Since version 2.5, it is not that easy to remove that information anymore, except via a trick in your theme’s function.php file or via a WordPress Plugin.
To manually remove it from your blog, open up your Theme Editor, and find the functions.php.
Add the following code to the file:
add_filter( ‘the_generator’, create_function(’$a’, “return null;”) );
