with potential for inappropriate use), as is the case of the Internet of Things (IoT). The variety of actors participating in cyberspace significantly increases the risks, an element to be considered in terms of responsibility in the face of harmful actions that may stir up conflicts between States. PROTECTION OF CRITICAL INFRASTRUCTURE Critical infrastructures are indispensable elements for social the stability and national security of countries, which is why their protection becomes a priority. To this end, it is considered appropriate to propose the following measures: a) Elaborate an agreed definition of international critical infrastructure by category; (b) Protect Internet protocols subject of the possible perpetration of cyber-attacks; (c) Promote cooperation and information exchange regarding specific-purpose malicious code activity on networks (e.g. Stuxnet) without compromising the capabilities and national security of States; d) Promote specific rules to prevent one State from attacking the critical infrastructure of another. INTERNATIONAL RIGHT Cuba reaffirms the application of the principles of international law and the Charter of the United Nations in cyberspace, in particular those relative to sovereignty, territorial integrity and non-interference in the internal affairs of States, to the use of ICTs, since the cybersecurity, although it involves other actors, is a responsibility of States.