A new report suggests that a small but vibrant group of smartphone hackers may be challenging the world's most digitally restrictive regime.

PHOTOGRAPH: ED JONES/GETTY IMAGES
FOR MOST OF the world, the common practice of "rooting" or "jailbreaking" a phone allows the device's owner to install apps and software tweaks that break the restrictions of Apple’s or Google's operating systems. For a growing number of North Koreans, on the other hand, the same form of hacking allows them to break out of a far more expansive system of control—one that seeks to extend to every aspect of their lives and minds.