Change WordPress Salts
Within the iThemes Security dashboard, click on the Advanced tab. On this screen, you’ll see the WordPress Salts section. Click the option to Change WordPress Salts and then click the Change WordPress Salts button.
iThemes Security makes updating your WordPress keys and salts easier in two ways:
1) You get a reminder every 30 days to update your keys and salts – iThemes Security will send you a dashboard reminder to update your keys and salts so you never forget.
2)You can update your keys and salts straight from your WordPress dashboard – iThemes Security allows you to update your keys and salts from within the plugin, so there’s no more having to manually generate a new set of keys and edit your wp-config.php file.