Banning [moved]

the reason you have not had any responses is you are a little vauge with your question
and the forums are for server administrators that run their own web servers with cpanel/whm ISTALLED. The question you asked would be best asked if you asked your web Host thats what you pay them for

 

What is 'your users" meant? You can prohibit thru your web application, but not to user who upload thru FTP

 

From what you say, it sounds like a gzipped file was somehow placed in the server's /tmp directory and then executed from there, probably by means of a known exploit in a web application such as phpBB.

Your concern here is NOT gzipped files - these being legitmately uploaded in any form or fashion will not present you with any problems.

The problem here is server security. In short, potentially vulnerable web applications should always be updated where possible to the latest known version and various pretty standard steps should be taken to prevent anything being executed from /tmp, or /var/tmp, that should not be.

If you don't want a repeat of the previous issue, speak to your host about ensuring that the server on which the account is located is sufficiently hardened against such exploits.