South korea's spy agency lowered reports

SEOUL, South Korea (AP) — South Korea's spy agency lowered the country's cyberattack alert Monday as affected Web sites returned to normal after suffering outages in a series of assaults that have cast suspicion on North Korea.

Dozens of South Korean and U.S. Web sites, including those of the White House and South Korea's presidential Blue House, were targeted in the so-called denial of service attacks, in which floods of computers try to connect to a single site at the same time to overwhelm the server.
But there have been no new Web attacks since the last wave launched Thursday evening. South Korea's National Intelligence Service said in a statement that it lowered the alert level because the attacks are fizzling out, but added it will keep a close watch for any signs of fresh assaults.
North Korea is suspected of involvement. The spy agency told lawmakers last week that a North Korean military research institute had been ordered to destroy the South's communications networks, local media reported.
The agency said in a statement Saturday that it has "various evidence" of North Korean involvement, but cautioned it has yet to reach a final conclusion.
South Korean media reported in May that North Korea was running an Internet warfare unit that tries to hack into U.S. and South Korean military networks to gather confidential information and disrupt service.


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