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," a military spokesman told South Korea's Yonhap news agency.
It is not clear whether low-grade documents or more important details like war plans were accessed.
The military said that the compromised section of its network was isolated once the attack was detected.
(Score: 0) by Anonymous Coward on Wednesday December 07 2016, @01:01AM
...we begin bombing in 5 minutes...
(Score: 0) by Anonymous Coward on Wednesday December 07 2016, @02:37AM
China might have something to say about that...
...because you might hit one of their many hackers currently working there...
Oops...did I just let the cat out of the bag?