The CIA Triad
Learn the three core security properties that guide all security decisions and trade-offs.
The CIA Triad is a free Cyber Security Academy lesson on CoddyKit — lesson 2 of 3. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Cyber Security Academy learning path, one of 3 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Meet the CIA Triad
No, not the spy agency! In security, CIA is three simple goals every defender aims for. Let's meet them. 🙂
C, I, A
It stands for Confidentiality, Integrity, and Availability. Three short words, one strong foundation.
Confidentiality
Confidentiality means only the right people can see the data. Like a sealed letter, not a postcard.
Confidentiality in life
Your bank balance stays private. Your DMs stay yours. That's confidentiality doing its job. 🔒
Integrity
Integrity means the data stays correct and unchanged. Nobody secretly edits it behind your back.
Integrity in life
Imagine someone changing the amount on your check. Integrity is the safeguard that keeps numbers honest.
Availability
Availability means the data is there when you need it. The lights turn on when you flip the switch.
Availability in life
Your banking app working at midnight? That's availability. If it's down, that goal failed.
Three legs of a stool
Picture a three-legged stool. Drop any leg and it tips over. Security needs all three to stand strong.
Nicely done!
You now know the heart of security: keep it private, correct, and ready. Next, let's meet who you're up against. 🎉
Quick Check
Let's lock it in: which goal makes sure data is there when you need it?
Frequently asked questions
Is the “The CIA Triad” lesson free?
Yes — the full text of “The CIA Triad” is free to read here on the web, and the Cyber Security Academy course includes 3 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Cyber Security Academy course, upgrade to CoddyKit PRO.
What will I learn in “The CIA Triad”?
Learn the three core security properties that guide all security decisions and trade-offs. You practise Cyber Security Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Cyber Security Academy?
No prior experience is required. Cyber Security Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 2 of 3, so you can start here or from the beginning and move at your own pace.
How long does the “The CIA Triad” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Cyber Security Academy lesson?
Yes. Every Cyber Security Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- What is Cybersecurity?
- The CIA Triad
- Who the Attackers Are