From FOX News:
FOX News has learned the recent cyber attack on the U.S. military's classified computer network has been traced to a front company operated by several former Russian spies.
The recent cyber attack on the U.S. military's classified computer network has been traced to a front company run by several former Russian KGB or Federal Security Service spies, FOX News has learned.
The attack led the Pentagon to ban the use of external hardware devices, such as flash drives, because that's how the "worm" got into the classified military network.
FOX News has learned the intrusion was discovered by the U.S. military in Afghanistan -- and that the attack came through the local Internet service provider that the Afghans (under U.S. supervision) contracted out to a front company run by former Russian spies.
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My Comment: Welcome to warfare in the 21rst century.