“Many security texts decompose the security of an information system in three components: confidentiality, integrity, and availability. Together, they are often referred to as "CIA". [They] constitute the core security properties that we must protect against attackers and eavesdroppers—such as the (other) CIA.”

—  Andrew S. Tanenbaum , book Modern Operating Systems

Modern Operating Systems (with co-author Herbert Bos), 4th ed, p. 596

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Andrew S. Tanenbaum 22
Dutch computer scientist 1944

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