An Israeli Cyber Warrior Puts a Scare Into CEOs at Davos

Citigroup's chief and other corporate titans are told to learn from Islamic State in the battle against clever hackers
Photographer: Daniel Acker/Bloomberg

How scared are chief executives about cyber attacks after the incursion into Sony's network? Scared enough that dozens of top brass, including Citigroup CEO Michael Corbat, showed up for a Davos breakfast with an Israeli cybersecurity expert who talked about defending against attackers armed with what he called the digital equivalent of an F-16 fighter jet.

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