They created a new user in mail group.. and installed a program called john from openwall.com locate at:
ftp://dl.openwall.com:21/pvt/3d9a566...x-1.7.2.tar.gz
i detected this becouse my server was slow.. when i checked the proces was around 10 "john" top rocesses runing..
anybody know what is this program john they installed and runed on my server?
i still don't know how they entered on my server.. if they created a new user then they had root access or the user can be created under other user?
i've deleted the new user they created, changed the root and ftp password..what should i do next?