Cyber drills in S Korea amid threat
South Korea's monopoly nuclear power company is conducting drills against possible cyber attacks after online threats of attack against its plants.
State-owned Korea Hydro & Nuclear Power Company said the two-day drills are to prepare workers in the event of hacking attacks aimed at disabling the plants' controlling systems.
The company and the energy ministry said even though the controlling system is safe from hacking, they are holding the exercises to assure the public of safety.
Last week, documents including layouts of nuclear facilities were published online. The company said they were not confidential.
On Sunday, a user on Twitter demanded a halt to operations at three nuclear power plants. The user threatened to disclose more data and carry out another attack if the request was not met.
A Korea Hydro official said investigators were still looking into whether the data was stolen by hackers who breached its computer systems or if it was leaked by employees.
But Hauri, an anti-virus company based in Seoul, said it alerted the company earlier this month after detecting malicious computer codes that were attached in emails to the nuclear company's employees. The company said investigators were looking into those emails to see whether they were connected to the stolen data.
The leaked documents from the nuclear power company dominated the headlines of South Korean media. The scare comes amid international attention over the hacking of Sony Pictures, which the United States has blamed on North Korea.
There is, however, no evidence yet that Pyongyang is behind the purported hacking threat against the nuclear plants.