This article by Kevin Poulsen at Security Focus caught my interest recently because it is an example of just how important computer security is in places where you might not expect it. For instance, the public power grid.
The article describes challeneges faced in securing the national power grid in today's global political climate. (Electric distribution network is a critical infrastructure resource by any definition I can think of.) This is not news, we've known the systems were vulnerable for about 4 or 5 years now, but it takes on additional urgency in light of the September 11 2001 terrorist attacks. The link will take you to a page where you can read about and request a copy of the 1997 Strategic Assessment report, which was updated in Septemeber of 2001.
This also interested me because one of my clients is a manufacturer of cogeneration systems and inventors of some very cool power related technology. CRM Energy Technologies' web site describes their product "On-Site Combined Heat and Power Systems™", and the technology they have developed, "Energy On Demand™".