National Intelligence Service says it cannot confirm the reports ...

[geetrue]

http://www.voanews.com/english/2009-07-11-voa24.cfm

According to South Korean news reports from the Yonhap news agency and the JoongAng Ilbo newspaper Saturday, the country's spy agency obtained documents ordering a North Korean army unit to start the attack.

The reports say some top South Korean lawmakers were briefed on the evidence earlier this week. But the National Intelligence Service says it cannot confirm the reports.

Computer experts describe this week's attack as a "distributed denial of service." A computer virus spreads from one personal computer to another, directing data traffic from those computers to the targeted Web sites.

The attacks hit the South Korean Defense Ministry, Intelligence Service and at least one Korean bank. In the United States, Web sites for the White House, departments of Homeland Security, Defense, and Treasury, and the Voice of America were also targeted.

South Korean intelligence officials say the attackers used 86 Internet Protocol addresses in 16 nations, including South Korea, Japan, China and the United States, to launch the cyber strikes.

Sleeper cells takes on a whole new meaning with 16 nations involved