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Network security for automation solutions is a concept that has been getting increased attention over the last decade. In the past, security was not a major concern because automation systems utilized proprietary components and were isolated from other networks within the business.
Today, many automation systems are comprised of commercial off the shelf components, including Ethernet networking and Windows operating systems. In addition, legacy products are being updated to operate in these new network environments.
The consequence is that formerly closed systems are suddenly connected to open enterprise networks and the Internet, exposing improperly protected systems to modern IT threats.