Strange Files on HDD

Has anyone had the following on there HDD before?

Folder: 71320C62C2FC
Containing - File
9360.bak
_README
EAB9.bak

The _README file did contain the message "- Please don't erase this. We're trying to fix something. ~surfpup"
I was recently hacked by someone and found these misterious files claming to be from a DEV. Obviously I deleted them.

fake

I think I remember such files. But that was some time ago. In any case it is a fake.
The devs use a second test environment to test fixes first. And if they tried to fix something with your account then you would know it beforehand.

What's next? The annoying filebombs again?

Intresting

Maybe it was some kind of file I/O attack