Cyber Security Basics

Master the world of cybersecurity with hands-on ethical hacking and penetration testing techniques. Learn to secure systems, identify vulnerabilities, and defend against modern cyber threats.

Start Learning 36 tutorials  ·  3 sections

This cybersecurity course covers ethical hacking, penetration testing, network security, and web application security from beginner to advanced levels. Learn how hackers think, discover vulnerabilities, and apply industry-standard tools to protect systems

What You'll Learn

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Foundation

Networking Foundations — A Complete Walkthrough

A 20-section walkthrough of computer networking fundamentals: the five core components (sender, rec…

75 min

Foundations of Cybersecurity — What is Cyber, What is Security, and Why the Problem is So Hard

A foundational tutorial demystifying cybersecurity from the ground up. Covers the meaning of "cyber…

34 min

The Threat Landscape — Real Cases, Real Newspapers, Real Lessons

A tour of the modern cyber threat landscape through seven verified incidents — Change Healthcare, C…

40 min

Government Support and Prototyping in Cybersecurity

A tour of the global government cybersecurity ecosystem — CISA, NCSC, CERT-In, ENISA — and the prot…

45 min

Foundations — Private Sector & Internet Out of the Lab

A two-part tour: how the Internet moved from ARPANET and NSFNET into private hands in 1995, and how…

39 min

Privatising & Scaling — A Cybersecurity Perspective

A deep walkthrough of how the Internet scaled from 4 ARPANET hosts to 5.4 billion users — through R…

64 min

Building the Web — A Cybersecurity Perspective

A 24-section cybersecurity walkthrough of how Tim Berners-Lee's three inventions at CERN (URL, HTTP…

75 min

The Internet as a Global Commons — Governance, Stewardship, Threats, and the Future of an Open Network

A 22-section walkthrough of the Internet as humanity's most ambitious shared resource. Covers Ostro…

69 min

How Data Moves Through the Network Stack

A practical, layer-by-layer walkthrough of how a single web request travels from your browser to th…

41 min

What is Governance? Governing the Internet

A practical guide to internet governance for security professionals, covering what governance actua…

36 min

Threat Actors — Who Are the Hackers? From Hobbyists to Criminal Organisations

A cybersecurity professional's guide to the modern threat actor spectrum. Walks through the classic…

43 min

Cyber Crime Case Study: The San Francisco Muni Ransomware Attack (2016)

On Black Friday 2016, the Mamba ransomware locked about 2,000 computers at San Francisco Muni, forc…

35 min

Threat Actors Explained: Hacktivists and Advanced Persistent Threats

Hacktivists and Advanced Persistent Threats (APTs) dominate today's cyber landscape—but their goals…

48 min

Hacking as a Process: The Cyber Kill Chain

Real cyberattacks unfold in stages, not a single moment. This tutorial explains Lockheed Martin's 7…

49 min

A Strategic Approach to Cybersecurity: Framing Effects, Primary Effects, Secondary Effects, and Second-Level Effects Explained

Every cyber incident propagates through four layers: Framing (how leaders perceive risk), Primary E…

49 min
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Cyber for Students

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Slides

Introduction to Cybersecurity — CIA Triad & Threats Guide

A 15-slide interactive walkthrough of cybersecurity fundamentals — the CIA triad (Confidentiality, …

34 min

Cybersecurity Basics: Malware, Ransomware, Phishing & Social Engineering — Interactive Slides

An interactive 19-slide walkthrough of the four threats behind 82% of every data breach — malware, …

38 min

Insider Threats, Zero-Day Attacks & Real Cyber Incidents — Interactive Slides

An interactive 18-slide walkthrough of the two most dangerous attack categories in modern cybersecu…

49 min

Evolution of the Internet & the Cyber Ecosystem — Government + Private Initiatives

A 19-slide interactive walkthrough of how the internet grew from ARPANET's 4 computers to today's 3…

45 min

Internet Architecture, Digital Transformation & Cybersecurity Standards

A 17-slide interactive walkthrough of how the internet is built, how organisations modernise on top…

48 min

Internet Infrastructure, Commercialisation, the Web & the Global Commons

A 16-slide interactive walkthrough of the internet's three inseparable dimensions — the physical in…

44 min

DNS Servers Explained — Root, TLD, Authoritative, ICANN Chain, Hosts File, nslookup & dig

An 18-slide interactive walkthrough of DNS from the ground up — what a DNS server is, how DHCP hand…

55 min

IP Addressing Explained — Public, Private, NAT, Subnet Mask & IPv6

A 16-slide interactive walkthrough of IP addressing from scratch — what an IP is, which OSI layer i…

51 min

IPv4 Classes, CIDR & Subnetting — Network, Broadcast, VLSM

A 13-slide interactive walkthrough of IPv4 subnetting from scratch — Classes A/B/C/D/E with binary …

60 min

The OSI Model — 7 Layers, PDUs, Protocols & Data Encapsulation

A 23-slide interactive walkthrough of the OSI model — every one of the 7 layers explained across 2 …

69 min

Network Security — Secure Protocols, Packet Analysis & Firewalls

A 25-slide interactive walkthrough of practical network security — secure communication protocols (…

59 min

Types of Hackers, Cybercriminal Organizations and Insider Threats

Not every hacker is a criminal. This tutorial explains white, black and grey hat hackers, plus scri…

36 min

Internet Governance, Cyber Laws and Ethical Responsibilities

Who runs the internet? This tutorial explains internet governance, the multistakeholder model, and …

36 min

Case Study – San Francisco Muni Attack: Hacktivism, Cyberterrorism and Nation-State Attacks

In 2016, ransomware locked 2,112 computers at San Francisco's Muni — and the city rode free all wee…

35 min

Advanced Persistent Threats and Supply Chain Attacks: Incident Analysis and Lessons Learned

The most dangerous attackers do not smash the door — they move in quietly and stay for months. This…

36 min