The CIA Triad is the foundation of information security. Every security control we implement is designed to protect one or more of these three principles. Understanding them is essential for every security professional.
CIA TRIAD
The Three Pillars of Information Security
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Confidentiality
Only authorized users and processes can access or modify data. Ensured through encryption, access controls, and authentication.
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Integrity
Data should be maintained in a correct state. Nobody should be able to improperly modify it, either accidentally or maliciously.
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Availability
Authorized users should be able to access data whenever they need to do so. Systems must be reliable and resilient.
Remember: A breach of any one pillar compromises the entire security posture.