China hackers behind worm attack: South Korean police

‘‘The bug is not exactly the same as the one developed by the Chinese group, but it looks like a variant,’’ said a police officer in charge of investigating cyber crimes. No cases of a shutdown or slowdown of the Internet in South Korea had been reported on Tuesday, but police were stepping up efforts to track down the origin of the ‘‘SQL Slammer’’ worm.

Security advisers said the worm was designed to infiltrate networks very rapidly and that it would continue to do so until servers had sufficient patches.