my forum got hacked and delete

[snakes1100]

You might want to check the server yourself for older backups as well, without a older backup, you CAN'T restore it back to a point before you go hacked, you can only try to repair the damage they did, move the users back to the groups they were in, then secure the site from that point on, the thread/post loss you will not be able to fix either without a backup.

As well, if they are doing backups with cpanel, cpanel backups are dated and shouldn't be over writing each other on a nightly basis.