>You can't trust any data copied from a compromised system.
>You may not be able to trust your latest backup.
If compromised machine's data is no longer trustworthy, and backups of that machine may not be trustworthy, then what happens when a server in the cloud gets compromised?
And - you still can!
As of April 1, 2010, SCAN.EXE is defunct and has been replaced by a stub file. https://kc.mcafee.com/corporate/index?page=content&id=KB68671