From Zero to Cybersecurity Professional | Complete Roadmap Series Series: Cybersecurity × OT/ICS Security — Full Roadmap Stage: 2 — Cybersecurity Core Module: 2.1 — Core Concepts Level: Beginner → Advanced Prerequisites: Stage 1 — Network Fundamentals (all modules) Next Module: 2.2 — Cryptography Table of Contents Why Core Concepts Are the Foundation of Every Security Decision CIA Triad — Confidentiality, Integrity, Availability Authentication — Proving Identity Authorization — Granting Permissi