Korea Hydro & Nuclear Power Co., the sole operator of South Korea’s nuclear power plants, said Sunday that it has separated its internal computer network from the Internet in an effort to guard against possible cyber attacks.
The state-run company said it has also completely divided its nuclear plant control systems from its internal computer networks and restricted both systems’ access to the Internet.
USB ports of the nuclear power plant control systems have also been sealed, it added.
The network separation is the safest way of protecting the nuclear power plants from hacking attacks from the outside, the company explained.
South Korea has 23 reactors nationwide, which generate around 35 percent of the country’s electricity.
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