If you have any security or ethical concerns or any other similar complaints that need to be made anonymously, we have a form where you can submit information to us:
https://docs.google.com/forms/d/1Ttp6DCMLOybCJI8Wld2G8f-OM4fjv8Pnn0CjXFRvD5M/
Alternatively you can email your concerns to: complaint-form@coursearc.com