Foundation glossary/Core concepts

CIA Triad

Companion card for the Foundation course — study the related lesson for full progress.

Simple explanation

Three goals: keep data secret, correct, and working when needed.

Technical explanation

Confidentiality, Integrity, Availability.

Real-life scenario

Gmail privacy (C), correct PhonePe amount (I), college portal up on results day (A).

Security relevance

Every control you pick should protect at least one of C, I, or A — otherwise it is theatre.

Practical example

Encrypt DB (C); checksums (I); redundant servers (A).

CIA Triad diagram
CIA triad — three goals that trade off under budget and risk.

Mini quiz

A college portal is down on results day. Which CIA goal failed?

Related lesson

Continue in the Foundation course: open lesson →