Computer crash in South Korea paralyzes banks, media

A man walks by a big computer monitor showing a shutdown of Internet site of Korean Broadcasting System (KBS) at its headquarters in Seoul, South Korea, Wednesday, March 20, 2013. Computers networks at two major South Korean banks and three top TV broadcasters went into shutdown mode en masse Wednesday, paralyzing bank machines across the country and prompting speculation of a cyberattack by North Korea.

A customer sits in a branch of Shinhan Bank in Seoul, South Korea, after th ebank's computer networks was paralyzed Wednesday, March 20, 2013. Police and South Korean officials were investigating the simultaneous shutdown Wednesday of computer networks at several major broadcasters and banks. While the cause wasn't immediately clear, speculation centered on a possible North Korean cyberattack.

A YTN security person walks after the TV station's computer networks were paralyzed at its headquarter in Seoul, South Korea, Wednesday, March 20, 2013. Computers networks at two major South Korean banks and three top TV broadcasters went into shutdown mode en masse Wednesday, paralyzing bank machines across the country and prompting speculation of a cyberattack by North Korea.

A depositor leaves after checking his account through an automated teller machine at a subway station as the bank's computer networks was paralyzed in Seoul, South Korea, Wednesday, March 20, 2013. Police and South Korean officials were investigating the simultaneous shutdown Wednesday of computer networks at several major broadcasters and banks. While the cause wasn't immediately clear, speculation centered on a possible North Korean cyberattack.

Depositors leave after checking their accounts through automated teller machines of Shinhan Bank at a subway station as the bank's computer networks was paralyzed in Seoul, South Korea, Wednesday, March 20, 2013. Police and South Korean officials were investigating the simultaneous shutdown Wednesday of computer networks at several major broadcasters and banks. While the cause wasn't immediately clear, speculation centered on a possible North Korean cyberattack.

Two bank clerks, left, check an automated teller machine at a branch of Shinhan Bank after the bank's computer networks are fixed in Seoul, South Korea, Wednesday, March 20, 2013. Computers networks at two major South Korean banks and three top TV broadcasters went into shutdown mode en masse Wednesday, paralyzing bank machines across the country and prompting speculation of a cyberattack by North Korea.

A security guard stands near a logo of Korean Broadcasting System at its headquarters in Seoul, South Korea, Wednesday, March 20, 2013. Computers networks at two major South Korean banks and three top TV broadcasters went into shutdown mode en masse Wednesday, paralyzing bank machines across the country and prompting speculation of a cyberattack by North Korea.

A big computer monitor shows a shutdown of the website of KBS at its headquarter in Seoul, South Korea, Wednesday, March 20, 2013. Computers networks at two major South Korean banks and three top TV broadcasters went into shutdown mode en masse Wednesday, paralyzing bank machines across the country and prompting speculation of a cyberattack by North Korea.