1.1 Definitions The concepts used in this document, refer to the following meanings; Information systems: The systems involved in providing services, processes and data by means of information and communication technologies. Cyber space: The environment which consists of information systems that span across the world including the networks that interconnect these systems, Information systems of public organizations: The information systems which belong to and/or are operated by the public organizations and agencies of the Turkish Republic, Information systems of natural and legal persons: The information systems which belong to and/or are operated by the natural and legal persons, subjected to the laws of the Turkish Republic. National cyber space: The environment which consists of the information systems that belong to public organizations, natural and legal persons, Confidentiality: Information systems and data can be accessed by authorized persons or systems only, and the confidential information pertaining to information systems or confidential information in the system will not be disclosed by unauthorized persons or systems. Integrity: Information systems and information can be changed by authorized persons or systems only, National Cyber Security Strategy and 2013-2014 Action Plan 8/47