Nicholas Leali at the Cisco Security Community blog has posted an excellent summary of the security lessons that can be learned from the control systems incident at Carrell Clinic:
Nicholas was kind enough to contact me for comments in the process of writing this article, as well as link back to this site. He has done an excellent job of summarizing the precautions an organization can take to minimize the risk of a similar compromise, including physical access control, more careful vetting of employees, and rotating guards.
It’s a good article, and I recommend anyone following the incident on this site to check it out.

So, who paid for your $5,000 trip to vegas?
Why, the Defcon fairy of course.
P.S.: You’re not very good at proxies. I don’t mind you posting comments (I’ve been approving them through moderation and even digging them out of the spam queue), so you might as well do it under your real name.
Your threats fall on deaf ears. I allready told you my name.
I don’t recall threatening you.
Oh then I guess you did not threaten me.