Easy WordPress Security Fixes to remove entropy

Remove version string from the header

remove_action('wp_head', 'wp_generator');

Hide Login error messages

add_filter('login_errors',create_function('$a', "return null;"));

// Source: http://www.wprecipes.com/wordpress-hack-remove-admin-name-in-comments-class

function remove_comment_author_class( $classes ) {

    foreach( $classes as $key => $class ) {

        if(strstr($class, "comment-author-")) {

            unset( $classes[$key] );

        }

    }

    return $classes;

}

add_filter( 'comment_class' , 'remove_comment_author_class' );