I was hacked :(

[cortinator]

The hacker deleted all my forums, threads, and members. How do I recover information that I lost?

[briansol]

a back up.

what mods did you have installed?

[Hayk]

The hacker deleted all my forums, threads, and members. How do I recover information that I lost?

Have you backup .sql file?

[cortinator]

Yes I do. How do I use this? Sorry, I'm pretty new to vBulletin.

[Hayk]

If your files on server are all OK, then you need to do restore of your db. You can read about it in vB documentation here.