Set secure attributes for session cookie

index.php

@@ -1,6 +1,15 @@
 <?php
 date_default_timezone_set("Europe/Berlin");
 error_reporting(E_ALL);
+
+session_set_cookie_params([
+	'lifetime' => 86400,
+	'path' => '/',
+	'domain' => $RUNTIME['DOMAIN'],
+	'httponly' => true,
+	'secure' => true,
+	'samesite' => 'Lax'
+]);
 session_start();
 
 include_once 'classen/MAIL/PHPMailer.php';