North Korean defector groups in South Korea say their computer systems have been attacked

SEOUL, South Korea – Websites and organizations run by North Korean defectors in South Korea say they have suffered cyberattacks, one week after computer systems at some South Korean banks and TV networks were widely disrupted.

Daily NK, which posts news about North Korea, says it experienced a cyperattack Tuesday, while South Korea’s Yonhap news agency says that Free North Korea Radio was also attacked.

Daily NK says its site was temporarily paralyzed by a cyberattack that was routed through the United States. It says some access was restored about an hour later but the attacks were continuing.

Yonhap says a computer network used by seven local governments was also briefly attacked, as was a network belonging to broadcaster YTN.

Authorities have not confirmed who was behind last week’s cyberattack but suspect North Korea.