Topic 3 - Principles

A secure information system provides three properties: confidentiality, integrity and availability. All three are essential in information systems security.

Confidentiality

Confidentiality ensures that people who don’t have the appropriate clearance, access level and “need to know” do not access the information.

Integrity

Integrity ensures that information cannot be modified or destroyed.

Availability

Availability means that information services are there when you need them.

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