Department of War (DoW) installations in the United States are heavily dependent for electricity, natural gas, drinking water and wastewater treatment, telecommunications, and rail transportation on critical infrastructure owned and operated by contractors, whether inside or outside the fence. The availability of these services is controlled by operational technology (OT) that is uniquely vulnerable to cyberattack. The regulatory structure for U.S. critical infrastructure cybersecurity is spotty, with jurisdiction divided among federal, state, and local governments.

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