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North Korea back online: Was it the target of a cyberattack?
North Korea back online: Was it the target of a cyberattack?

North Korea experienced a major Internet outage on Tuesday, according to companies that monitor global networks, raising suspicion that the country may have been the target of a cyberattack. The loss of service came just days after President Obama warned that the U.S. would respond to the recent computer hack of Sony Pictures Entertainment, which the FBI has blamed on North Korea. But U.S. officials declined to say whether the government was responsible. Researchers at Dyn, an Internet performance management company based in New Hampshire, began noticing increasing amounts of instability in North Korea’s connection over the weekend. Networks that govern how traffic is...

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