The CIA triad is a designed model that guides policies for information security within an
organization. CIA stands for Confidentiality, Integrity, and Availability. Confidentiality limits
access to Information by it authorized users. Integrity assures that the information is
trustworthy or accurate. And Availability guarantees access to information by authorized users.
Authentication and Authorization are both very important and are both used to protect
systems and information. Authentication Verifies that someone is exactly who they claim to be.
Where sometimes you may be asked for a specific username or passwords, or to scan a
fingerprint. Whereas Authorization determines the level of access you have to certain
information using an ACL (Access Control List).