CISSP Note (Domain 1: Access Control): C.I.A. – Quick Definitions

November 16, 2009 · Posted in Information Security 

Information Security has three key focus ensuring the Confidentiality, Integrity and Availability of information, commonly known as C.I.A. Below are their definitions.

Confidentiality – ensure that information is not disclosed to unauthorized person

Integrity

  • Prevention of modification by unauthorized users
  • Prevention of unauthorized changes by otherwise authorized users
  • Internal and external consistency
    • Internal consistency within the system (i.e. within a database the sum of subtotals is equal to the sum of all units)
    • External consistency – database with the real world (i.e. database total is equal to the actual inventory in the warehouse)

Availability – ability of authorized personnel to access information on time and as necessary

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