Information Assurance (IA)

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Information Assurance (IA) are measures that protect and defend information and information systems by ensuring their availability, integrity, authentication, confidentiality, and non-repudiation. These measures include providing for restoration of information systems by incorporating protection, detection, and reaction capabilities.

Also see: Confidentiality, Integrity and Availability (CIA Triad)

Source: Committee on National Security Systems, CNS 4009 Glossary

Source: NYSE Assurance