9
If you are "dedicated" and i saw where you talked about files uploaded to your system - then I suggest you check your error log files, your accces log files, and at root if on Linux - run netstat and last to see what's going on. Also, do you have a firewall? One of the most prevalent attacks is a system not firewalled, and many many ports Listening and not blocked. THe various onzyou sites out there will use that avenue to gain a telnet session to a seemingly innocent port and begin what I like to term "wget attacks" Gasically working to move trojens and scripts to the temp directory of a site. After they have that control, they can, in some cases, appear to be logged in as root. Depending on the script, they may very well be root. There are just so many things to check...