Learn the connections, not just the checklist.

Fundamental IT skills explain how computers, software, networks, and users fit together. They provide the base for understanding and troubleshooting security systems.

Start here: Computer Hardware Components

An operating system manages computer hardware and provides services to applications and users. Security work often involves its accounts, files, processes, and network settings.

Start here: Windows

Linux is an open-source operating system family built around the Linux kernel. Its command line, permissions, processes, and logs are core security skills.

Start here: Installation and Configuration

Learn how systems exchange data through addressing, protocols, services, architecture, and safe diagnostic tools.

Start here: Networking Fundamentals

Security fundamentals are the principles and practices used to protect systems and information. They include managing access, reducing risk, and detecting problems.

Start here: CIA Triad

Cryptography uses mathematical techniques to protect information and verify integrity or identity. Correct key handling and protocol use are as important as the algorithms.

Start here: Hashing and Salting

Threat intelligence is analyzed information about threats, including their capabilities and indicators. OSINT gathers relevant information from publicly available sources.

Start here: Threat Intelligence Basics

Cloud computing provides on-demand computing resources over a network. Security responsibilities depend on the service model and the division of work with the provider.

Start here: Security in the Cloud

Programming expresses instructions that a computer can execute. Security-minded programming considers input validation, access, errors, and dependency risks.

Start here: Python

Offensive security uses authorized testing to find weaknesses before they are exploited. Clear scope, permission, and responsible reporting are essential.

Start here: Reconnaissance

Defensive security protects systems by reducing weaknesses, monitoring activity, and responding to incidents. SOC teams coordinate many of these operational tasks.

Start here: Security Teams

Governance, Risk, and Compliance (GRC) aligns security decisions with organizational goals, risk management, and applicable obligations.

Start here: Assets