28. CIA Triad Deep Dive

Confidentiality means keeping information private. Only authorized people should be able to access it. This includes data like personal information, health records, business plans, and other sensitive details. The goal is to protect data from being seen by the wrong people.

Integrity means keeping information accurate, complete, and unchanged unless an authorized person makes the change. Data should remain correct whether it is stored, being processed, or being transferred. If data is altered improperly, its integrity is lost.

Availability means authorized users should be able to access data and systems when they need them. The information should be available on time, reliably, and in the right form. It does not mean systems must run all the time, but they must meet the organization’s needs.

In simple terms: confidentiality keeps data private, integrity keeps it correct, and availability keeps it accessible.