First of all, let me say that I'm very sorry about the recent hack. I generally am very wary about server security, and this is the first time our server has been compromised. I am unsure of what trick the hackers used, but I will be stepping security even further up than I have in the past.
Turns out hardware issues were the real culprit. More on this later in the topic.
Now for the good news. Everyone's files, data, and settings are intact. Nothing's been lost. You should be able to login to cPanel just like you did in the past.
One final note. Nothing's been lost today, but if there is a next time we might not be as lucky. Everyone should backup their data regularly just in case. This can be done in just a few clicks from the Backups section in cPanel.
Again, I'm sorry about the recent hack and sincerely hope we can prevent it from happening again.