North Korea's 'paranoid' computer operating system revealed
Found on The Guardian on Sunday, 27 December 2015

“[The late leader] Kim Jong-il said North Korea should develop a system of their own. This is what they’ve done,” Gunrow told the Chaos Communication congress in Hamburg on Sunday.
This latest version, written around 2013, is based on a version of Linux called Fedora and has eschewed the previous version’s Windows XP feel for Apple’s OSX – perhaps a nod to the country’s leader Kim Jong-un who, like his father, has been photographed near Macs.
So they just copied Fedora and changed it. State media probably said that the great leader Kim Jong-il wrote it all by himself in a few days to stop the evil rest of the world from harming their ideal bubble.