MyBB Community Forums

for the fourth time in my forum hacked by unknown person
I use MyBB version 1.6.3, admin path is my locker,
I've done everything imaginable in this post http://community.mybb.com/thread-44977.html

but the forum I can still be easily hacked
I've re-uploaded the index.php but 5-10 minutes later be hacked again
luckily I had backups of database & homedir,
then I decided to remove all existing files in public_html
dah let her for a few days
whether the solution to all this trouble?

Most likely the hacker has your FTP login information. Reset all of your passwords (FTP, database, admin accounts) to long randomly generated passwords.

Also, read this guide by the MyBB Support Team lead. Do everything it says in the "What to do if you get hacked" part, and take all the extra security measures above later.

If you're getting hacked that frequently and easily then yes, it sounds like they have a backdoor or some other means of getting access.

change your password FTP, call your host for help.
the good host company, do care about this.
if not, move to another host.

Run an antivirus+antispyware on your pc.

then how do I check the hacker planted a backdoor in our cpanel?

*cough* Recovery *cough* forum

Haha Labrocca (Yes I do also feel thats its needed now, seeing the hacked forum cases everyday), but these days, the shell exploit is going on I guess, uploading them to root server and then defacing the targeted sites.

OP I advice you to contact your host and talk about this and if hes not sure, I suggest you to switch hosts.

my forum hacked again http://buzter.net/

Then some must have access to your webspace...