What Does CIA Triad of Information Security Mean?
Confidentiality, Integrity and Availability (CIA) are the three foundations of information systems security (INFOSEC). The purpose of the CIA Triad is to focus attention on risk, compliance, and information assurance from both internal and external perspectives.
Confidentiality -- Information and Communication Technology (ICT) systems and data can only be accessed by authorized entities. The Principle of Least Privilege (PoLP) and Zero Trust both support confidentiality.
Integrity -- Data can be trusted to be accurate and complete while at rest, while in use and while in transit. Key processes that support integrity include confidential computing and encryption.
Availability -- Data and information systems are always accessible. High availability (HA) is supported by redundancy, predictive analytics and cloud computing.