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Summary

Industrial networks are important and vulnerable, and there are potentially devastating consequences of a cyber incident. Examples of real cyber incidents—from CENTCOM to Aurora to Stuxnet—have grown progressively more severe over time, highlighting the evolving nature of threats against industrial systems. The attacks are evolving into APTs, and the intentions are evolving from information theft to industrial sabotage and the disruption of critical infrastructures.
Securing industrial networks requires a reassessment of our security practices, realigning them to a better understanding of how industrial protocols and networks operate (see Chapter 4, “Industrial Network Protocols,” and Chapter 5“How Industrial Networks Operate”), as well as a better understanding of the vulnerabilities and threats that exist (see Chapter 6, “Vulnerability and Risk Assessment”).

  

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