July 8, 2009, staff at the South Korean capital, Seoul, Korea Internet Security Center busy. South Korean intelligence on the 8th Promotion Agency said that the South Korean government agencies and other internal parts of bodies were hacking site that day. Korean National Police Agency Network Center that day to deal with terrorist attacks that have led to the presidential Blue House and the Department of Defense Web site and other major government agencies paralysis began investigating hacker attacks.

South Korea announced that the departments concerned, from at 18 o'clock on the 9th year, South Korean National Intelligence Service and National Bank Web site can not be visited. South Korea National Assembly, the Department of Defense, Minister of Foreign Affairs and other agencies were unable to open the site, or open a very slow speed. In addition, the USFK Web site also links the phenomenon of instability.

Evening on the 7th of DDoS attacks, at the same time the South Korean Presidential Office, Congress, the National Intelligence Service and the Department of Defense and other state organs, as well as the financial sector, the media and the corporate firewall, the attack site.

Published by the Korean National Intelligence Service said at the first wave of attacks on the 7th of the main targets of 12, including South Korea and other major organs, and the attack on the 8th is South Korea's financial, security and corporate firewalls. It is reported that the third wave of attack also includes the first two waves of attacks on targets.

South Korean National Intelligence Service said the materials, the Office of the President, the Department of Defense and the Ministry of Foreign Affairs and other departments working network in March this year has been isolated and the Internet, it has not been DDoS attacks. Disclosure of government documents have been interrupted or did not happen.

2009-7-10