Human and technical factors that could lead to detonation of nuclear weapons varies from human error, negligence, miscalculation, miscommunication, technical faults, risk calculation, vulnerability to cyber security.

“By nature, nuclear assets were extremely vulnerable to cyber attacks,” Camille Francois from Harvard Law School Berkman Center for Internet and Society said, adding that this is due to their strategic importance.

via Vienna Conference Discusses Risks of Nuclear Weapons Use / Sputnik International.