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computer security

computer science
Also known as: cyber security, cybersecurity

computer security, the protection of computer systems, networks, software, and digital information from harm, theft, and unauthorized use. Whereas computer hardware is typically protected by the same means used to protect other valuable or sensitive equipment—namely, serial numbers, doors and locks, and alarms—the protection of information and system access is achieved through technical safeguards such as encryption, firewalls, and authentication systems, as well as policies and user practices designed to reduce security risks. Modern computer...