| As national security expands into cyberspace, it is necessary to secure both physical and cyberspace to ensure national security and the safety of the people. Countries around the world are seeking to strengthen their defense capabilities and cyber security strategies by linking the private, public and defense sectors at the national strategy level. In this paper, after examining various cases to respond to cyber threats, the Korean military proposes cyber threats and necessary requirements when applying IoT technology to the military from three aspects |