Process automation systems are key to the organizations behind the UK's critical national infrastructure (CNI) as they both monitor and control critical processes involved with the production and transportation of gas, electricity and water. As these systems become more 'open' - using Ethernet, TCP/IP and Web technologies - they become vulnerable to the same threats that exist for normal IT systems.
No takes yet. Share an insight, caveat, or question.
S. Mustard (2005) studied this question.