iThemes Security Pro 8.4.1

Bug Fix: Fixed a timing issue that prevented Privilege Escalation from giving the escalated user access to Appearance > Customize.
Bug Fix: Reimplemented support for some removed reCAPTCHA class functions to fix a compatibility issue with iThemes Exchange.

New Feature: Added support for the new Invisible reCAPTCHA.
Enhancement: Removed AhrefsBot from the HackRepair blacklist as they are legitimate bot.
Bug Fix: Removed warning that could appear: "Undefined offset: 0 in ithemes-security-pro/pro/user-security-check/class-itsec-user-security-check.php"
Bug Fix: Removed warning: "Non-static method ITSEC_Setup::uninstall() should not be called statically".

Bug Fix: When a requesting IP address cannot be found, default to 127.0.0.1. This fixes issues with some alternate cron setups.
Bug Fix: Having more than one iThemes Security modification in a .htaccess, nginx.conf, or wp-config.php file will no longer result in having all the file content between each section removed when updating the file.
Bug Fix: Modifications to the wp-config.php file added by W3 Total Cache now have their Windows-style newlines preserved when iThemes Security updates the file.