Firewall – auto_prepend_file

The Wordfence Web Application Firewall is designed to run via a PHP ini setting called auto_prepend_file in order to ensure it runs before any potentially vulnerable code runs. This PHP setting is currently in use, and is including this file:

/var/chroot/home/content/protect.php
If you don’t recognize this file, please contact us on the WordPress support forums before proceeding.

How would I know what this file is?
Please help.

https://wordpress.org/plugins/wordfence/