Officials say the attack is being coordinated from outside South Korea . Infected `` zombie '' computers are directing traffic surges to certain sites . Targets include South Korea 's presidential office , foreign ministry and defense ministry . The hackers have also targeted banks in Japan, China and Taiwan.
Officials say the attack is being coordinated from outside South Korea . Infected `` zombie '' computers are directing traffic surges to certain sites . Targets include South Korea 's presidential office , foreign ministry and defense ministry . 17 South Korean sites were hit during a similar attack over three days in 2009 .