The term IT security also called cybersecurity is applied to technology and computer systems. describes techniques that secure information processing systems. It focuses on protecting computers, networks, programs and data from unauthorised access or damage. against attack scenarios, to avoid economic damage and to minimize risks.
Three basic security concepts important to information on the internet are confidentiality, integrity, and availability.
Concepts relating to the people who use that information are authentication, authorization, and nonrepudiation.