North Korean hackers target U.S.-South Korea military drills

Suspected North Korean hackers have targeted a joint U.S.-South Korea military exercise being held this week though classified information has not been compromised.
South Korean and U.S. forces will on Monday begin 11-day Ulchi Freedom Guardian summer exercises to improve their ability to respond to North Korea’s evolving nuclear and missile threats.
North Korea objects to such exercises saying they are preparations by the U.S. and its South Korean ally for an invasion of it.
The hackers were believed to be linked to a North Korean group that researchers call Kimsuky, and they carried out their hack via emails to South Korean contractors working at the South Korea-U.S. combined exercise war simulation centre, the Gyeonggi Nambu Provincial Police Agency said in a statement.
North Korea has previously denied any role in cyberattacks.
The Kimsuky hackers has long used “spear-phishing” emails that trick targets into giving up passwords or clicking attachments or links that load malware, according to researchers.