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Cyber Security Tutorial• 6 min read
Cyber Security Fundamentals & The CIA Triad
Confidentiality, Integrity, Availability, and Threat Vectors
Cyber security is the practice of protecting systems, networks, programs, and data from digital attacks, unauthorized access, destruction, or exfiltration.
The CIA Triad: The Cornerstone of Information Security
1Confidentiality: Ensuring that sensitive information is accessible only to authorized personnel (enforced via encryption, access control lists, MFA).
2Integrity: Safeguarding the accuracy and completeness of data, guaranteeing it has not been tampered with or corrupted in transit (enforced via cryptographic hashing, digital signatures, audit logs).
3Availability: Ensuring that systems and data are accessible to authorized users when needed (enforced via redundancy, DDoS mitigation, disaster recovery backups).
Pro Tip
Security is not a product—it is an ongoing operational posture and defense-in-depth mindset.
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Test Yourself With Exercise
What are the three pillars of the foundational security CIA Triad?