Cybersecurity

North Korea tried to hack South's railway system: spy agency

North Korea has tried to hack into email accounts of South Korean railway workers in an attempt to attack the transport system's control system, South Korea's spy agency said on Tuesday.

South Korea has been on heightened alert against the threat of cyberattacks by North Korea after it conducted a nuclear test in January and a long-range rocket launch last month, triggering new U.N. sanctions.

South Korea had previously blamed the North for cyberattacks against its nuclear power operator. North Korea denied that.

South Korea's National Intelligence Service (NIS) said in a statement it had interrupted the hacking attempt against the railway workers and closed off their email accounts.