Security Fundamentals

A lightweight introduction to information security: from core principles like the CIA triad to cryptography, hashing, and access control.

1. 1

   Introduction to Information Security

   We cannot start a meaningful exploration of computer security without defining the subject itself. In this post, we'll talk about what security actually means.

2. 2

   Foundations of Information Security - CIA Triad

   The CIA triad isn’t just a catchy acronym. It’s the backbone of security. We’ll break down confidentiality, integrity, and availability, and see how they shape the way we think about protecting systems and data. 

3. 3

   Access Controls: Auth and Authz

   How do systems make sure the right people get in, and the wrong ones stay out? In this post, we’ll dig into authentication (proving who you are) and authorization (what you’re allowed to do). They’re simple ideas, but they have a massive impact on security.

4. 4

   Fundamental security principles

   This post is all about the “big ideas” behind secure systems, like least privilege and separation of duties. These principles are surprisingly simple but form the backbone of how we design systems to stay safe from attacks.

5. 5

   Introduction to cryptography

   Coming soon

6. 6

   Symmetric vs Asymmetric encryption

   Coming soon

7. 7

   Hashing in cryptography

   Coming soon