The North Korean government has doubled the size of its 'cyber army', according to reports from the South Korean Ministry of National Defense.
North Korea has taken its cyber staffers up from 3,000 to 6,000 and has increased its efforts against South Korea's technological infrastructure. The ministry said that it is being attacked on physical and psychological fronts.
The ministry released the allegations in a white paper, explaining that the additional staffers and resources are being used against South Korea. The 6,000 staff make up a unit known as Bureau 121.
A report on Reuters which quotes from the white paper suggests that South Korea fears an increase in attacks and capabilities.
"North Korea is currently running its 6,000-member workforce for cyber warfare and performing cyber attacks for physical and psychological paralysis inside South Korea, such as causing troubles for military operations and national infrastructures," the paper said.
"As a result of our investigation ... the FBI now has enough information to conclude that the North Korean government is responsible for these actions," the FBI said.
However, North Korea insisted that the same methods are common to a wide range of attacks and anchors, and that it will respond with "counteraction".
"It is common sense that the method of cyber warfare is almost similar worldwide. Different sorts of hacking programs and codes are used in cyber space," the government said.
"Our toughest counteraction will be boldly taken against the White House, the Pentagon and the whole US mainland."
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