SEOUL, Aug. 20 (UPI) -- South Korean military officials say hackers have attacked their computer systems 37 times since May, and six times so far this month.
The military warned all staff to refrain from opening e-mails from "navyojo@hanmail.net," which contains an attachment, that if opened could infect the user's computer with a code that can steal information from the computer, the Yonhap News Agency reported Saturday.
"We have spotted 10 cases of hacking attempts originating from overseas each in May and June. In July, there were 11 such cases and so far this month, six more attempts have been detected," an unnamed official said.
The malicious e-mails might have been sent by North Korean hackers, some speculated. There have been no information losses so far, the official said.
The United States and South Korea are conducting their annual computer simulation joint military exercise, called "Ulchi Freedom Guardian." The drill started its 11-day run Tuesday.
