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Related to network security: cryptography
network security(1) The authorization of access to data in a network, which is controlled by the network administrator. Users are assigned an ID and password that allows them access to information and programs within their authority. See authentication. See also computer security and information security.
(2) Protecting the computer systems in the network from unwanted intrusions. See UTM, firewall, antivirus program, network security scanner, IDS, IPS and SIEM.