Organized hackers in North Korea have the ability to launch cyberattacks against critical infrastructure and could even potentially lead to casualties, according to a high-profile defector. Professor Kim Heung-Kwang, a former computer science professor at the Hamheung Computer Technology University, helped teach some students that eventually joined the Bureau 121 hacker group.
North Korea has around 6,000 well-trained hackers - suspected of operating inside of China - with an estimated 10 to 20 percent of the nation's military spending directed towards online cyber operations.
"The reason North Korea has been harassing other countries is to demonstrate that North Korea has cyber war capacity," Prof. Kim told BBC Click. "Their cyberattacks could have similar impacts as military attacks, killing people and destroying cities."
Many cybersecurity experts believe the threat from North Korea is overblown, while others admit that it's a problem that must be closely monitored.