Network security isn’t what it used to be. For decades, industrial networks were not connected to the outside world. So, security was a team of guards. Over the past 15 years, the advantages of connectivity outside the plant became too important to ignore. For the first 10 years of outside connectivity, cyber security was simple – if awkward, since plant computers could not be patched overnight in a world of continuous operation. Initially, attacks were fairly straightforward. Viruses often had the simple objective of capturing attention or being mildly disruptive. Network intrusion attempts could be identified and blocked at the perimeter. In the last five years, we’ve seen a surge in sophisticated and malicious hackers who want to disrupt production or steal recipes. * Network security consists of the provisions and policies adopted by a network administrator to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessib
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