Of course you can set 2k up, secure it, and have it and ready to roll in the time it takes you just to download the files for *nix. Unix is great if you are a knowledgeable user, but if you are not it's a steep learning curve and a large time investment just to get it set up and running, let alone secure. Only go *nix if you either are already a Unix geek or feel like spending many many hours learning how to configure and run the OS in a command line.
You can make 2k plenty secure for far less effort. This particular hack was an automated one I believe, and perpetrated through various slaved compromised machines that exploited a common, but already patched, bug. Simple use of Windows Update and the notification engine they use would have prevented this issue... it did for me.

This was not a new exploit or a difficult one... Deja simply had not taken basic security precautions on that machine, and it would have been compromised just as easily (and possibly to much more dangerous effect) if it had been a *nix box without security precautions taken.
[ 07-18-2001: Message edited by: Lephturn ]