aspectpsychologique business colispiégés conditionssociales coréedusud economics etc fiction general infrastructure internationalrelations internationalsecurity internet internetandterrorism internetetterrorisme korea(south) mailbombings menacesdeviolence nouvelles police politicalfreedom politicalscience prevention prévention psychologicalaspects psychologie psychology romans réseauxsociaux security socialconditions socialnetworks socialscience teacher-studentrelationships terrorism terrorisme terrorists threatsofviolence