Easy Learn
What Is the Principle of Least Privilege? A ground-up explanation of one of the oldest, simplest and most powerful ideas in computer security — give every user, program and service only the access it truly needs, no more and no less — from the 1970s academic paper that named it,…
What Is GDPR? A ground-up, plain-English walkthrough of the General Data Protection Regulation — what it is, why it exists, how it actually works under the hood, and what it means for anyone who builds software or handles people’s data. 01 · Intro & History02 · Problem03 · Core Concepts04…
What Is Encryption? A complete, book-quality tour of how encryption works — from ancient ciphers to AES, RSA, TLS, and the coming shift to post-quantum cryptography — written for beginners and production-minded engineers alike. 01 · What Is Encryption?02 · History03 · Core Concepts04 · How It Works05 · Symmetric…
What Is a Vulnerability Scan? A complete, beginner-to-production tour of vulnerability scanning — what it is, how scanners work internally, how organisations like Netflix and Amazon run them at scale, and how to avoid the mistakes that make scans useless or dangerous. 01 · Intro & History02 · Problem03 ·…
What Is a Vulnerability Scan? A complete, beginner-to-production tour of vulnerability scanning — what it is, how scanners work internally, how organisations like Netflix and Amazon run them at scale, and how to avoid the mistakes that make scans useless or dangerous. 01 · Intro & History02 · Problem03 ·…
What Is Authorization? A deep, ground-up guide to how systems decide what you are allowed to do — from a single if statement in a small startup’s codebase, all the way up to the planet-scale policy engines running quietly inside Netflix, Google, Uber and AWS. 01 · Intro & History02…
What Is Data Residency? A beginner-friendly, deep-dive guide to where your data lives, why that location matters legally and technically, and how modern systems are architected around it — from GDPR and cloud regions to region-aware code, backups, and audits. 01 · Intro & History02 · Problem03 · Core Concepts04…
How Do You Prevent SQL Injection? A complete, beginner-friendly walkthrough of what SQL injection is, why it happens, and exactly how production systems at companies like banks, e-commerce platforms, and SaaS providers stop it — with Java/Spring Boot code, architecture diagrams, and real-world breach stories. 01 · Introduction02 · Problem03…
Attribute-Based Access Control A complete, beginner-friendly guide to ABAC — what it is, how it actually decides who gets access to what, how companies like Amazon, Google, and Netflix build and scale it, and how to implement it correctly in production systems. 01 · Intro & History02 · Problem03 ·…
What Is a Web Application Firewall (WAF)? A ground-up, beginner-friendly deep dive into how WAFs work internally, why they exist, how they’re architected at companies like Netflix and Amazon, and how to run one reliably in production. 01 · Introduction02 · The Problem03 · Core Concepts04 · Architecture05 · Internal…