Security functions

/* Hide Wordpress version */
add_filter( 'the_generator', '__return_null' );
remove_action('wp_head', 'wp_generator');

/* Hide WordPress Version Number from the RSS Feeds */
function remove_wp_version_rss() {
	return'';
}
add_filter('the_generator','remove_wp_version_rss');

/* Hide WordPress the version number from scripts and styles */
function remove_version_from_style_js( $src ) {
if ( strpos( $src, 'ver=' . get_bloginfo( 'version' ) ) )
$src = remove_query_arg( 'ver', $src );
return $src;
}
add_filter( 'style_loader_src', 'remove_version_from_style_js');
add_filter( 'script_loader_src', 'remove_version_from_style_js');

/*Disable theme and plugin file editor*/
define( 'DISALLOW_FILE_EDIT', true );