TryHackMe

Pre Security module 1 — what cyber security is, offensive vs defensive work, core terms, career paths, and staying on the right side of the law.

Updated 18 Sept 2026Module 1

Pre Security module 2 — what's inside a computer, how components connect, the boot process, and the many types of computer you'll need to secure.

Updated 18 Sept 2026Module 2

Pre Security module 3 — what an OS does, Windows basics (interface, system tools, apps, files, security settings) and Linux basics, with the commands for each.

Updated 18 Sept 2026Module 3

Pre Security module 4 — data representation, Python and JavaScript fundamentals side by side, and databases with SQL.

Updated 18 Sept 2026Module 4

Pre Security module 5, What is Networking? — networks and the internet, private vs public, IP vs MAC addresses, MAC spoofing, IPv4 vs IPv6, and ping.

Updated 22 Sept 2026What is Networking?

Pre Security module 5, Intro to LAN — star, bus and ring topologies, switches vs hubs, routers, subnetting and address roles, ARP request/reply, and DHCP DORA.

Updated 22 Sept 2026Intro to LAN

Pre Security module 5, OSI Model — the seven layers and what each does, addresses and devices per layer, TCP vs UDP, and encapsulation.

Updated 22 Sept 2026OSI Model

Pre Security module 5, Packets & Frames — packet vs frame, IP and TCP headers, the three-way handshake and close, UDP, and port numbers and ranges.

Updated 22 Sept 2026Packets and Frames

Pre Security module 5, Extending Your Network — port forwarding, stateful vs stateless firewalls, VPNs and VPN protocols, routers, layer 2 vs layer 3 switches, and VLANs.

Updated 22 Sept 2026Extending Your Network

TryHackMe module 6 — TLD/SLD/subdomain structure, A/AAAA/CNAME/MX/TXT records, and the DNS resolution journey with TTL caching.

Updated 27 Sept 2026DNS in Detail

TryHackMe module 7 — HTTP/HTTPS, URL structure, requests/responses, HTTP methods, status codes, headers, and cookies.

Updated 27 Sept 2026HTTP in Detail

TryHackMe module 8 — front end vs back end, HTML/CSS/JS, page source, sensitive data exposure, and HTML injection.

Updated 27 Sept 2026How Websites Work

TryHackMe module 9 — load balancers, CDNs, databases, WAFs, web server software, virtual hosts, and static vs dynamic content.

Updated 27 Sept 2026Putting It All Together