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Hacker Killed by Drone Was Islamic State’s ‘Secret Weapon’

Targeting of Islamic State’s electronics expert shows how digital warfare has upset balance of power on modern battlefield

U.S. and British officials decided earlier this year that a hacker needed to die.

Junaid Hussain, a British citizen in his early 20s, had risen fast to become a chief in Islamic State’s electronic army. One person familiar with the matter said he hacked dozens of U.S. military personnel and published personal and financial details online,...

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