According to news released by BBC, South Korea’s military cyber command, set up to guard against hacking, appears to have been breached by North Korea, the military has said.
A spokesman told the BBC that classified information was thought to have been stolen, although it is not clear exactly what data was accessed.
The North has previously been accused of hacking into banks and media outlets but never the South’s military.
Pyongyang has in the past rejected allegations of cyber crime involvement.
It seems the intranet server of the cyber command has been contaminated with malware. We found that some military documents, including confidential information, have been hacked,” an official at the Ministry of National Defence told Yonhap News Agency, adding that authorities suspect North Korea is behind the latest online infiltrations.
The cyber command said it isolated the affected server from the whole network to avoid the spread of viruses. But it has yet to fully determine what data were leaked.
It marked the first time that the data of South Korea’s cyber command has been compromised. South Korea set up the command in January 2010 as part of its efforts to counter external hacking attempts on the country’s military.
The military sources claimed that the compromised section of its network was isolated once the attack was detected.
Moreover, North Korea is thought to have thousands of people involved in cyber crimes.
Since 2010, the North Korean people have been focusing on application programming interfaces (APIs), which can be made to attack infrastructures, North Korean Professor Kim Heung-Kwang told.
North Korea has a track record of accused cyber attacks in recent years against South Korean agencies, banks and media companies.
Some 140,000 computers at 160 companies were attacked up until this June, according to police.
The sources added that South Korea’s military classified information is believed to have been stolen, however, it’s not clear exactly what data was accessed.