admin_post_nopriv WordPress Action Hook
The admin_post_nopriv hook is called when a user is not logged in and attempts to access the WordPress admin area. This can be useful for customizing the login page or for displaying a message to users that they must be logged in to access the admin area.
do_action( 'admin_post_nopriv' ) #
Fires on a non-authenticated admin post request where no action is supplied.