iThemes Security Pro 8.5.3

Bug Fix: Fixed SQL query bug that resulted in the "Minutes to Remember Bad Login (check period)" setting being ignored.
Bug Fix: Fixed bug that prevents wp-admin/install.php blocking from working properly on nginx servers.
Bug Fix: Don't attempt to do an SSL redirect when WP CLI is running.

New Feature: Introduces Magic Links module. Users can now request a magic login link when logging in during a brute force attack on their username.
New Feature: Added a new setting in WordPress Tweaks: "Login with Email Address or Username".
Enhancement: Host email images from the plugin instead of relying on iThemes servers to help email clients marking messages as spam or blocking images.
Bug Fix: Improved Recaptcha compatibility with WooCommerce.
Bug Fix: Error when searching for modules preventing modules from appearing.
Bug Fix: Use the wp_options table when acquiring locks in Multisite.
Bug Fix: Prevent duplicate daily digest emails on sites with high load.
Misc: Added Magic Links, a new Pro-only feature, to be activated by Security Check.
Misc: Rearranged modules to be listed alphabetically.

Bug Fix: Fixed logical error that prevented backups from executing.
Bug Fix: Fixed issue that could cause database locks to flood the database.