You will not be affected by any serious crime in North Korea. Your visit will be so tightly controlled that you will simply not be in a position to be the victim of crime. The worst you can expect is petty theft, particularly at Pyongyang airport and in public markets. As always you should exercise care, be alert to your surroundings and ensure personal belongings are secure. Just because your movements are tightly choreographed you should not get too complacent.