Officials called it "one of the largest state-sponsored hacking campaigns ever prosecuted by the Department of Justice."
The Israeli Defense Forces' elite hacker group, Unit 8200, gathered information that thwarted the attack.
The most devastating attack on the internet was motivated by the online computer game Minecraft.
Liberia has a single cable linking it to the global Internet, which was targeted by hackers.
All BBC websites and its streaming player was down for several hours.
The hacking compromised information in 83 million household and small business accounts.
The controversial Cybersecurity Information Sharing Act passed in the Senate Tuesday afternoon.
President says words must be followed by deeds.
The officials' government email accounts were not vulnerable to the hacking because they were on more secure systems.
A cyberwarfare expert says wars will soon be fought on computers, not with bullets and bombs.
The U.S. should urgently help Ukraine build its own defensible and independent communications system.
With little congressional involvement, the Justice Department is changing the rules about how law enforcement obtains warrants.
The hacking of the US weather satellite system is a warning that must be heeded.
Executive office networks face a barrage of attacks that are believed to be government-sponsored
New report assesses level of threat posed by increased number of connected medical devices
The Walla news site said Israeli civil servants had also been instructed not to open emails received from foreigners