North Korean Internet sites attacked by members of an international hacktivist group remained out of commission on Monday, five days after the cyber assault.Yonhap News Agency, which has been monitoring the affected sites, confirmed that while the Web page of Uriminzokkiri, North Korea\'s main Internet-based media and propaganda, outlet was repaired over the weekend, its Twitter account remained closed with \"Tango Down\" messages popping up whenever a person tries to view the content.\"Tango Down\" is a commonly used term by hackers to point out that they have paralyzed and defaced a site.Anonymous, a loose group of hackers from all over the world, took responsibility for attacking a handful of North Korean Internet sites last Thursday. They claimed the attacks were made to call on Pyongyang to stop making nuclear weapons and threaten the world with nuclear war.Besides Uriminzokkiri, which is run by the Committee for the Peaceful Reunification of the Fatherland, the Websites of the Anti-Imperialist National Democratic Front, Our Nation School, Ryomyong and the Ryugyong Clip sites, operated by Pyongyang or pro-North Korean organizations, remained off line.However, Web sites of the Rodong Sinmun, an organ of the ruling Workers\' Party of Korea, the Korean Central News Agency, Pyongyang\'s official news wire service, and the Web portal site Naenara were working normally.Meanwhile, a Korean member of Anonymous who uses the Twitter account @Anonsj said in an online discussion that the hacktivist group wants to break into the communist country\'s Kwangmyong national Intranet on June 25. The date marks the start of the Korean War (1950-53).The hacker, who did not wished to be identified, said in the next attack, Anonymous members not only want to attack the government\'s homepage, but will try to steal personnel data of North Korean leaders, and even hack into the North\'s nuclear facilities.The hacker said actions are underway to create a so-called Ninja Gateway so outsiders can gain access to the closed Intranet that is not connected to the world wide Internet.The hacktivist group member added that the gateway will also allow people in North Korea, unrestricted access to the Internet that could allow the inflow of democracy.The @Anonsj said the June 25th attack will be led by Anonymous Korea, the local branch of the group.\"We have no superiors with all activities led by individuals,\" the hacker claimed.