vBulletin Admincp, Modcp directories, we know them and the hackers do to. Leaving them as vBulleting named them cut a step out out of the program for the hackers and lets them bypass the forum and hack your admincp or modcp directly.
Changing vBulletins names for these folders adds another step to the process and hopefully makes things just a bit more difficult for unwanted visitors to gain access to your forum. Rename the folders anything you like but there are a few steps to the process.
1) Rename the Admincp and Modcp folders to your chosen name
2) Rename the folder in your ftp client
3) Change vBulletin’s config.php file to match the new folders.
Important: after renaming the admincp and modcp folders, YOU MUST change their names in the config.php file to match the new names. Also when upgrading, make sure to rename the directories.
// ****** PATH TO ADMIN & MODERATOR CONTROL PANELS ******
// This setting allows you to change the name of the folders that the admin and
// moderator control panels reside in. You may wish to do this for security purposes.
// Please note that if you change the name of the directory here, you will still need
// to manually change the name of the directory on the server.
$config['Misc']['admincpdir'] = 'admincp';
$config['Misc']['modcpdir'] = 'modcp';