IntroductoryFree3h of content · 2 guided labs200 XP

Introduction to Cybersecurity

A free, hands-on introduction to cybersecurity for people starting from zero. Understand what the field actually is, how attackers reach their victims, and take apart a real phishing email yourself. Three hours, no prior knowledge, no card.

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2

Guided labs

Isolated VM environment

3h

Of content

Labs + practice + exams + simulations

3

Modules

Progressive difficulty

2–4h

Per lab session

Unlimited restarts

HTKWhat's included
  • The full course: written lessons with diagrams
  • Per-module exams to check what stuck
  • Guided walkthrough of a real phishing email
  • Submit the final assignment
  • Lifetime access, no card required
  • Isolated lab VM and graded certificate: 24 € unlock
0

No card required

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Lab tools you will use

WHOISRecondigDNScrt.shCertificatesVirusTotalScannerWHOISRecondigDNScrt.shCertificatesVirusTotalScanner
urlscan.ioScannerAbuseIPDBThreat intelMITRE ATT&CKFrameworkurlscan.ioScannerAbuseIPDBThreat intelMITRE ATT&CKFramework

Before you start — quick answers

The course itself is free: every lesson, every module exam, and the guided analysis walkthroughs. You need an account, but no card and no trial that quietly starts charging. Two things are paid, and we would rather you knew now than found out halfway through: launching the real isolated lab VM, and having an instructor personally grade your final assignment. That unlock costs 24 € one-off.

Only with the 24 € unlock. The certificate depends on an instructor reviewing and passing your final assignment, and that review is the paid part. You can complete and submit the assignment for free — it simply sits unreviewed until the unlock.

None. This course is written for someone who has never worked in tech. If a term needs explaining, it gets explained the first time it appears.

No. Everything runs in your browser, including the lab. Any computer from the last decade will do.

Course Syllabus

3 modules · 3h of content

Each phase maps to a module in this course. Scroll to see how the curriculum builds, module by module.

1

Module 1

Introductory

What cybersecurity really is

  • Confidentiality, integrity and availability — and how to use them to reason about any incident
  • The main threat families: ransomware, stealers, phishing, fraud, and how each one reaches its victim
  • Attacks as a sequence, not an event: reconnaissance, initial access, execution, persistence, objective
  • Who attacks and why: opportunistic crime, organised groups, insiders — motivation shapes method
  • Where defence actually happens: prevention, detection, response, and why detection is where careers are
  • Module exam
2

Module 2

Introductory

Your first analysis

  • Anatomy of a phishing email: sender, headers, pretext, payload, and what each one gives away
  • Reading email headers without guessing: SPF, DKIM and DMARC in plain terms
  • Judging a link before you click: domains, subdomains, homoglyphs, redirects and shorteners
  • Investigating a domain: WHOIS, registration date, hosting, and why a week-old domain matters
  • Evidence versus assumption: writing a verdict you can defend
  • Guided walkthrough of a real case, start to finish
  • Module exam
3

Module 3

Introductory

Your career in cybersecurity

  • The map of the field: SOC and detection, incident response, malware analysis, offensive security, OSINT
  • What each role does on an ordinary day, not on its best day
  • Which skills transfer between specialisms and which are specific
  • Certifications, labs and portfolios: what actually gets read by a hiring manager
  • How to choose a direction without closing doors
  • Final assignment

What you will learn

  • Explain the CIA triad and use it to reason about any incident
  • Recognise the main threat families and how each one reaches its victim
  • Follow an attack through its phases instead of seeing isolated events
  • Take apart a phishing email and justify your verdict with evidence
  • Investigate a suspicious domain in a real lab environment
  • Map the specialisms in the field and choose a direction with criteria

Hands-on Lab

You finish the course by investigating a suspicious domain the way an analyst would: pulling apart the email headers, checking who registered the domain and when, comparing what the link claims to be against where it actually goes, and writing down a verdict you can defend with evidence. The point is not the tooling — it is learning to separate what you have proven from what you have assumed, which is the habit every other course here builds on.

2⬡ 2 guided labs
2–4hSession window
UnlimitedRestarts
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Requirements

  • ·No prior knowledge — this course assumes you are starting from zero
  • ·A computer with a browser. Nothing to install: the lab runs in the browser
  • ·Curiosity and around three hours

What's free, and what the 24 € unlock adds

Said plainly here so nothing surprises you halfway through the course.

Free, with an account

  • Every lesson and module, start to finish
  • Per-module exams, with unlimited retries
  • The guided analysis walkthroughs
  • You can submit the final assignment
See how the simulator works →

Pro unlock

24 €
  • +The real lab: your own isolated VM, launched on demand
  • +An instructor personally reviews and grades your final assignment
  • +The HTK certificate, which requires that graded pass

One payment, no subscription. Buying any paid HTK course includes this unlock, so you never pay for it twice.

And this is exactly what you unlock

No marketing screenshots: the three pieces, as they actually look inside.

1

The real lab

Your own cloud VM, isolated and yours alone, with the tools already installed. You launch it from the browser whenever you want and it is destroyed when you finish.

Sample of the lab panel. The times shown are illustrative.

2

Your assignment, graded by a person

You submit your report and an instructor reads it, scores it out of 100 and writes back what you got right and what is missing. It is not an automated grader. The certificate depends on that grade.

Sample grading. The score and comment are illustrative.

3

The full simulator

A full OSINT investigation on a suspicious domain: you choose which lookups to run, read what each one actually proves, and rule on the domain. The point is not running every command — it is knowing which one answers the question you have.

Investigation deskpaused

Subject · domain

portal-htk-acceso.com

You do not have to run every lookup. You have to know which one answers what you are asking.

The real interface of the “Investigation desk” simulator. Here it plays by itself; with the unlock you work it yourself.

Frequently Asked Questions

Complete answers about this course, labs, certificates, and refunds

The course itself is free: every lesson, every module exam, and the guided analysis walkthroughs. You need an account, but no card and no trial that quietly starts charging. Two things are paid, and we would rather you knew now than found out halfway through: launching the real isolated lab VM, and having an instructor personally grade your final assignment. That unlock costs 24 € one-off.

Only with the 24 € unlock. The certificate depends on an instructor reviewing and passing your final assignment, and that review is the paid part. You can complete and submit the assignment for free — it simply sits unreviewed until the unlock.

None. This course is written for someone who has never worked in tech. If a term needs explaining, it gets explained the first time it appears.

No. Everything runs in your browser, including the lab. Any computer from the last decade will do.

Around three hours of material. Most people spread it over a few evenings. There is no clock and no expiry — your access is permanent.

That is largely what module 3 is for. The course ends by mapping the specialisms in the field so you can pick a direction on the basis of what the work is actually like, rather than on which job title sounded best. From there, each HTK learning path takes you from beginner to intermediate.

No. Any paid HTK course purchase includes the intro course's lab and assignment review, so you will never hit a paywall inside the course that introduced you to the platform.

After this course

Then pick the specialism that fits you

This course exists to help you choose with some basis instead of guessing. Once you know which side of the field appeals to you, each learning path takes you from beginner to intermediate with the labs to match.

Explore learning paths →
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