Foi um ataque de Engenharia Social.
Unfortunately today we were the victim of a malicious social engineering attack which has resulted in our server being accessed, and our database being compromised.
To clarify, this was no hack of the WHMCS software itself, nor a hack of our server. It was through social engineering that the login details were obtained.
As a result of this, we recommend that everybody change any passwords that they have ever used for our client area, or provided via support ticket to us, immediately.
Regrettably as this was our billing system database, if you pay us by credit card (excluding PayPal) then your card details may also be at risk.
This is just a very brief email to alert you of the situation, as we are currently working very hard to ensure everything is back online & functioning correctly, and I will be writing to you again shortly.
We would like to offer our sincere apologies for any inconvenience caused. We appreciate your support, now more than ever in this challenging time.