The issue focused mostly on how the US government would handle the fallout of the hack.

"The Department of Defense is aware of the attack. The Department of Homeland Security has launched an immediate cyber defense posture," said Pentagon spokesman Capt Jeff Davis.

He added that the US military has already implemented a number of security measures, including a security camera system to monitor all electronic devices in the area, "and additional measures that will be put into place over the coming days as the attack progresses."

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