One by one, power to homes, businesses, hospitals and transportation systems were shut down. It was Dec. 23, 2015, in the Ukraine and the nation’s electrical grid had been hacked. In the dead of winter.

What events in the Ukraine revealed was that the world’s critical infrastructure was highly vulnerable to attack, both from outside by malicious actors and from inside through corruption of the supply chain. It’s perhaps the most serious threat confronting the cybersecurity community today.

Yet though there’s mounting evidence that airports, hospitals and energy plants are at serious risk, a lack of public and private coordination to protect them is glaring.

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