Live Security Platinum is a rouge antivirus. Like any rogue, it tells the user that their PC has a virus, but the user doesn't have any malware. It uses the administrator icon as the logo. Also like any rogue, it attempts to steal the users money.
It can first stop the dllhost.exe, meaning that programs that need .dll files cannot function. It can also stop task manager as well, meaning the user has almost no way of starting dllhost.exe up again. It can also block programs like notepad and solitare, and other files.