Introduction to Cybersecurity

Chapter 1 of 134 min read

Welcome: how this course works

A free, beginner-friendly course in plain English. Learn how cyberattacks really work, protect your phone, accounts and data, see how organisations defend themselves, and plan your first steps into a cybersecurity career. Covers the core topics of Cisco Networking Academy's Introduction to Cybersecurity, with more real-world stories, hands-on activities and quizzes.

Hi, and welcome 👋

If you have ever wondered how hackers break into accounts, why your bank keeps sending you one-time codes, or whether a career in cybersecurity is right for you, this course is for you.

You don't need any technical background. You don't need to know how to code. If you can use a smartphone and a web browser, you can follow every chapter.

The one-sentence version of this course: cybersecurity is the work of keeping people, devices and information safe from harm in the digital world.


What you will learn

By the end of this course, you will be able to:

  • Explain what cybersecurity is and why it matters to you, your family and your workplace.
  • Recognise the most common attacks, such as phishing, malware, ransomware and scams that target mobile wallets.
  • Protect your own phone, computer, accounts and Wi-Fi network with simple, practical steps.
  • Understand how companies defend themselves, and the words security teams use every day.
  • Know the basic rules of ethics and law that every security learner must follow.
  • Plan your next steps if you want to start a career in cybersecurity.

How this course is organised

#ChapterWhat it's about
1WelcomeHow the course works (you are here)
2Why cybersecurity mattersYour data, why it's valuable, and the CIA triad
3Who are the attackers?Hackers, criminals, insiders and nation states
4Vulnerabilities and malwareWeak spots and the malicious software that uses them
5Social engineering and phishingHow attackers trick people instead of computers
6Network and password attacksDoS, man-in-the-middle, fake Wi-Fi and more
7Protect your devices and networkUpdates, antivirus, home router and safe Wi-Fi
8Passwords and multi-factor authenticationStrong logins without the headache
9Protect your data and privacyBackups, encryption and oversharing
10How organisations defend themselvesFirewalls, SOCs, incident response and more
11Ethics and the lawStaying on the right side of the line
12Your future in cybersecurityJobs, skills, certifications and a learning roadmap
13Final reviewYour personal security checklist and a final quiz

This course covers the same core topics as the free Introduction to Cybersecurity course from Cisco Networking Academy. It adds more real-world stories, local examples, hands-on activities and a career roadmap. It is an independent course and is not affiliated with or endorsed by Cisco.


How to get the most out of it

  • Go in order. Each chapter builds on the one before.
  • Do the "Try this" activities. They take 5 to 15 minutes, and they make your own accounts safer right away.
  • Answer the quiz before reading the answers. Answers are at the bottom of each chapter.
  • Take breaks. One chapter a day is a great pace. The whole course takes about 8 hours.
  • Keep a notebook. Write down new words in your own language. Explaining a term in your own words is the fastest way to remember it.

A quick promise about safety

This course teaches you how attacks work so that you can defend against them. Everything you practise should be on your own devices and accounts, or on platforms that are built for legal practice. Chapter 11 explains why this matters so much.

Ready? Let's begin with the big question: why should you care about cybersecurity at all?

Finished reading?

Up next: Why cybersecurity matters