There is an incredibly worrying article at the BBC web site. It describes an attack on part of a water system. What is worrying about this ‘incident’ is that SCADA systems are used in all sorts of applications many of which are safety critical. I describe the potential problems with offshore oil installations in Chapter 1. This is just the tip of the problem. Read the article and worry, particularly the reference to the three-character password.
Update (23 Nov 2011): there is some debate about whether this was an attack or not. Read the update here.