While North Korea’s economy is in miserable shape, cyberwarfare is one area that the country advanced further than even Kim Jong Un may have imagined.

Over his ten years in power, the young leader has turned what likely used to be a small group of nerds with limited internet access into a sophisticated cyber army that is generating a significant share of North Korea’s revenue — as well as its most important intelligence. 

And that’s just the beginning, experts say.

Under his father’s leadership, the DPRK’s cyber operations were