Doug Madory

North Korea's Internet was on the fritz for a second day on Tuesday. But the US is staying silent on whether it launched a cyber attack as payback for the hacking of Sony Pictures.

North Korea's Internet went completely dark Monday after hours of instability, cyber experts said, suggesting the country's network could be under attack following the hacking of Sony Pictures.

North Korea appeared to have been hit by Internet outages, reports said on Monday, just days after US President Barack Obama warned Washington would retaliate for a cyber attack on Sony Pictures blamed on Pyongyang.

North Korea's Internet was on the fritz for a second day on Tuesday. But the US is staying silent on whether it launched a cyber attack as payback for the hacking of Sony Pictures.

North Korea's Internet went completely dark Monday after hours of instability, cyber experts said, suggesting the country's network could be under attack following the hacking of Sony Pictures.

North Korea appeared to have been hit by Internet outages, reports said on Monday, just days after US President Barack Obama warned Washington would retaliate for a cyber attack on Sony Pictures blamed on Pyongyang.