Extremely dangerous to attack North Korea's civilian communications, which are largely the same as their military's. Depending on the impact, it could confuse leadership into thinking a decapitation strike is underway.

edit: A specific example I was thinking of is the DPRK's civilian cell phone network, Koryolink (particularly this subsection under "Nuclear Crisis Communications"):

>"If North Korean leaders rely on the country’s cellular network for crisis communications, there is a real chance of interruptions in network service during a crisis, and they might be misinterpreted as a cyberattack against North Korea’s nuclear forces. While North Korean “special users” have their own dedicated channel, it appears to operate on the same network infrastructure, using the same towers and the same base stations."

https://www.nti.org/analysis/articles/does-kim-jong-uns-phon...