Cybersecurity Fundamentals

• Core Concepts – Think Like a Cyber Defender

Part 3: The CIA Triad – The Heartbeat of Cybersecurity

Want to crack any cybersecurity interview or understand why digital security exists? Start with the CIA Triad.

Nope, not the spy agency — this CIA stands for:

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🔹 C – Confidentiality
Your data stays private. Only the right person can access it.

🔐 Example: Encryption of emails and files so that unauthorized people can’t read them.

"Jaise tumhara WhatsApp chat sirf tum dono ko hi dikhna chahiye — that’s confidentiality."

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🔹 I – Integrity
Your data stays accurate and unaltered.

Example: A hospital record should not be edited by someone unauthorized. Even a small change can be dangerous.

Tip: Use hashing (like SHA-256) to verify data integrity.

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🔹 A – Availability
Your data is available when you need it — without delay or downtime.

Example: If your banking app goes down during an emergency transfer, availability has failed.

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?? Why It Matters:

Everything in cybersecurity — firewalls, access control, antivirus, encryption — works to maintain CIA.

Interview Hack:
If asked about any cyber attack, analyze which part of CIA it affects.

Ransomware? Affects Availability.
Phishing? Affects Confidentiality.

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Action for Beginners:

• Learn basic cryptography and hashing.

• Try solving CIA case studies from platforms like TryHackMe.