Introduction to Cyber Security for Absolute Beginners

Cyber security is no longer a specialist concern tucked away in a server room. It plays a role in keeping hospitals running, protecting financial systems, supporting the integrity of elections, and safeguarding personal information.

This course provides an accessible introduction to cyber security for anyone who wants to understand the subject without an IT, coding, or networking background.

Across twelve focused five-minute lessons, you’ll explore what cyber security means, how the field developed, and the fundamental problems it is designed to address. You’ll meet the major categories of threat actors — including script kiddies, hacktivists, organised cybercrime groups, insiders, and nation-states — and explore how understanding an attacker’s motives can help explain their methods.

You’ll then examine how common attacks work, including phishing, social engineering, ransomware, DDoS, and injection attacks. You’ll also learn why compromised credentials and legitimate access are often more useful to attackers than trying to break through technical barriers.

The course then turns to defence, covering:

• The CIA Triad — Confidentiality, Integrity, and Availability
• Defence in depth, least privilege, and Zero Trust
• Authentication, multi-factor authentication, and passkeys
• Encryption in transit and at rest
• How a Security Operations Centre detects and responds to incidents

The course also introduces practical security measures you can consider for your own accounts and devices, including password managers, multi-factor authentication, timely software updates, backups, and the 3-2-1 backup rule.

Finally, you’ll get an overview of cyber security career paths and the different areas of the field you may want to explore further.

Cyber security is a broad discipline, but understanding its core concepts doesn’t require a technical background. This course is designed to give you a clear introduction to the subject and a foundation for further learning.