North Korea says America engaging in cyberwar

North Korea, typically the perpetrator of hacks, accuses the US of downing its Internet servers after reports of disruptions to the North's main news services.

The report comes, as North Korea, South Korea and the South's ally the US, squabble over sanctions against the regime in Pyongyang because of its latest nuclear test.

South Korea's MBC television said the North's state media services were among those affected by the cyber incident, including the websites of the KCNA news agency. 

"It is nobody's secret that the US and the South Korean puppet regime are massively bolstering up cyber forces in a bid to intensify the subversive activities and sabotages against the DPRK," KCNA said on Friday.

The Guardian writes: "Military experts have said cyber warfare is a major threat from North Korea, along with its conventional forces and its weapons of mass destruction programme, posing a security risk to utilities and communication networks in the South."