Hackers from North Korea target American and South Korean military drills
The joint US-South Korean military drill was targeted by suspected North Korean hackers, according to South Korean authorities on Sunday, although they were unable to acquire any classified material.
The 11-day Ulchi Freedom Guardian summer exercise, which will help South Korean and US soldiers respond better to North Korea's shifting nuclear and missile threats, is set to start on Monday.
Such drills are opposed by North Korea, which claims that they are invasion preparations by the US and its ally South Korea.
Researchers have given the North Korean hacking group Kimsuky the name. The hack was carried out by sending emails to South Korean contractors working at the South Korea-US Joint Exercise War Simulation Center, according to the Gyeonggi Nampo Provincial Police Agency.
According to confirmation, no military-related information has been stolen, the police stated in a statement on Sunday.
North Korea has in the past denied participating in cyberattacks.
The researchers claim that the Kimsuky hackers have long employed "spear phishing" phishing communications, which deceive targets into divulging passwords or clicking on attachments or links that contain malware.
The IP address used in the hacking effort matched one indicated in the 2014 hack on a nuclear reactor operator in South Korea, according to authorities. South Korean police and the US military said they conducted a joint investigation and discovered this.
South Korea claimed that North Korea was responsible for this cyberattack at the time.
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