N Korea blamed for cyber-attacks on Seoul metro system
Seoul's metro system suffered from a series of cyber-attacks by North Korea last year, with various servers and 60 computers being impacted by the malware. Such infrastructure attacks are a regular occurrence in South Korea.

SEOUL • North Korea is suspected of having launched a cyber attack last year on the South Korean capital's subway system that carries millions of commuters every day, a Seoul lawmaker said yesterday, citing intelligence reports.

The attack, staged between March and August, affected several servers of Seoul Metro, which runs four major subway lines, ruling party legislator Ha Tae Kyung said.

Nearly 60 employee computers had been infected by malware, Mr Ha said.

After analysing the hacking records, the National Intelligence Service found that the malware codes were similar to those that North Korean hackers had used before, he added.

A Seoul Metro spokesman confirmed the hack, but stressed that the computers used for the direct operation of subway lines had not been compromised.