Hacker Threatens to Publish 100,000 Pages on South Korean Nuclear Reactors

A hacker threatens South Korea with a leak of 100,000 pages of data about South Korean nuclear program, if Seoul does not close several reactors before Christmas.

MOSCOW, December 21 (Sputnik) — A hacker in possession of South Korean nuclear reactor blueprints has posted internal company information about the facilities, warning that more material could follow if Seoul does not close several reactors before Christmas, Yonhap News Agency reported Sunday.

"I can open to the world 100,000 pages of data that have not yet been revealed," the hacker's tweet was quoted as saying by the agency.

The hacker has revealed data concerning the Gori-2 and Wolsong-1 nuclear reactors on his Twitter account called "president of anti-nuclear reactor group", according to the agency.

The data was reportedly leaked from South Korea's state-run Korea Hydro and Nuclear Power (KHNP) company and concerns the reactors' air conditioning and cooling systems. The hacker threatened to publish all the information that he had on the nuclear facilities if the reactors were not shut down by Christmas.

"You say this isn't confidential material. Let's see if you will take responsibility if the information on blueprints, systems and programs are all disclosed to the countries that want them," the hacker wrote in another tweet.

According to Yonhap, the latest publication of the KHNP materials is the fourth one since December 15. On December 19, the hacker demanded closing three other reactors for three months.

KHNP said that the information the hacker had did not pertain to the core technologies and did not pose a threat to the security of the reactors. KHNP operates 23 nuclear power reactors, providing 30 percent of South Korea's overall power supply, according to the company's website.