because they feel not safe to have one, i remember an article say that they had an hackers stealign a large amount of bitcoin in korea, don't remember now if south or north but the point stand
their exchange would be utterly unsecure and none will trust it, also in korea the adoption is not that high like japan people don't care too much about bitcoin there
As far as I know, Japan is on the verge of a real boom in the sphere of
crypto-currencies. It bitcoin provoked among the Japanese a real stir. I
believe that Japan is very skeptical about the legalization of bitcoins,
which I can not say about North Korea. Here already there is a policy.
Especially since I do not believe in the development of North Korea in the
world bitcoin.