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This teacher has a fast response time and rate, demonstrating a high quality of service to their students.
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Since January 2026
Instructor since January 2026
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1 repeat student
Trusted choice for 1 returning student
Beginner cybersecurity lessons online in the Netherlands by cybersecurity student with a focus on PTES and OWASP
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From 49 C$ /h
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Want a structured start in cybersecurity?
In these online classes, I'll guide beginners in understanding the basic principles of web security and penetration testing.
The focus is on methodical thinking and understanding commonly used frameworks like OWASP and PTES. We'll not only cover theory but also look at how to apply these principles in practical scenarios and labs.
Depending on your level, we can work on:
• Introduction to cybersecurity and core concepts
• OWASP Top 10 at a beginner's level
• The different phases of PTES
• Understanding risk analysis and vulnerabilities
• Basic web application attacks in theory
• Preparation for beginner labs like TryHackMe
Each class consists of explanations of concepts, analysis of examples, and targeted practice questions. The goal is to build a strong foundation and learn to think in a structured way like a security analyst.
These classes are designed for absolute beginners or students who want to take their first steps in web security.
Location
location type icon
Online from Netherlands
About Me
In my lessons, clarity and structure are key. I explain topics step by step and focus strongly on the why behind the material, so students don’t just follow instructions but truly understand what they are learning. There is always room for questions, repetition, and adjusting the pace to the student’s needs.

As a student with a solid IT background, I understand the challenges beginners often face. That’s why my teaching style is practical, patient, and beginner‐friendly, with a strong focus on creating a safe and comfortable learning environment. Lessons can be given in Dutch or English and are tailored to each student’s personal goals.
Education
I am currently a Cybersecurity student (Associate Degree).
Before this, I completed two IT programs: MBO‐3 IT Support and MBO‐4 Application Development, which provided me with a strong foundation in both technical skills and structured problem‐solving.
Experience / Qualifications
Through my studies, I have gained broad experience in IT fundamentals, programming, and cybersecurity methodologies. I focus on clear explanations and a structured, beginner‐friendly approach, with strong attention to ethics and professional practices. I am experienced in guiding students step by step and adapting lessons to individual learning goals and pace.
Age
Children (7-12 years old)
Teenagers (13-17 years old)
Adults (18-64 years old)
Seniors (65+ years old)
Student level
Beginner
Intermediate
Duration
60 minutes
The class is taught in
Dutch
English
Japanese
Reviews
Availability of a typical week
(GMT -04:00)
New York
at teacher icon
Online via webcam
Mon
Tue
Wed
Thu
Fri
Sat
Sun
00-04
04-08
08-12
12-16
16-20
20-24
Python for Beginners – Personal and Practical Online Lessons
Want to learn Python in a clear and structured way?
I offer online lessons tailored to your level, pace, and learning goals.
Whether you're an absolute beginner or already have some basic knowledge, we'll work step by step to build a strong programming foundation.
What will we cover?
Depending on your starting level, we can work on:
• Variables and data types
• Input and output
• If/else structures
• For and while loops
• Working with 1D and 2D lists
• Writing and using functions
• Working with files
• Basic error handling
• Programmatic thinking and problem solving
The content of the lessons is tailored to your goals, for example, for school, self-study, or exam preparation.
Lesson Structure
Each lesson consists of a combination of:
• Code analysis of sample programs
• Theory with concrete code examples
• Explanation of the underlying logic
• Exercises for independent practice
The goal is not just to learn what to type, but to understand why the code works and how to arrive at a solution yourself.
Who is this suitable for?
• Absolute beginners
• Students taking Python at school
• People who want to start programming
• Anyone looking for structured guidance
What can you expect?
• Personal guidance
• Explanation at your own pace
• Practical assignments
• Focus on understanding instead of speed
Not a fixed, standard course, but targeted guidance tailored to your learning process.
Read more
Do you want to learn how websites are structured?
In these online lessons, you'll learn the basics of HTML and CSS in a structured and clear way.
We'll work step by step on understanding the structure of a webpage and how to design it visually.
What will we cover?
Depending on your level, we can work on:
• Basic HTML structure
• Elements such as headings, paragraphs, and lists
• Links and images
• Introduction to CSS
• Colors, fonts, and layout
• Box model and positioning
• Structure and readable code
The emphasis is on understanding the technical structure of a website, not just on copying code.
Lesson structure
Each lesson consists of:
• Explanation of new concepts
• Analysis of sample code
• Step-by-step collaborative building
• Exercises for independent practice
We'll work at a leisurely pace and build on what you've already learned.
For whom? • Absolute beginners
• Students studying HTML/CSS at school
• People who want to start with web development
• Anyone who wants to build a solid foundation
What can you expect?
• Structured explanations
• Practical examples
• Personal guidance
• Focus on understanding and structure
No fixed, standard course, but guidance tailored to your learning goals.
Read more
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you can find my LinkedIn here
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1st lesson is backed
by our
Good-fit Instructor Guarantee
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While adults are still debating whether kids should use AI, they are already using it.
The question isn't "should they?" it's "how do we do it intelligently?"

In this course, your child will discover:
✓ What AI actually is: not magic, not mystery. How machines think, what they can do, what they can't
✓ How ChatGPT really works: not just "ask a question and get an answer," but why it responds that way, where it fails, when to trust it
✓ What LLMs are (Large Language Models): in language they understand, not tech jargon
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✓ Think critically about AI: Bias, privacy, creativity. What does AI do better than humans? What can't it do?
✓ Real-world applications: How AI transforms medicine, education, art, gaming, everyday life

Why this is different:
Most AI courses for kids teach "here's the tool, use it." I teach how to think about AI.
Your child will learn to see AI not as black magic or a solution to everything, but as a powerful tool with real limits.
And, more importantly: that they can control how they use it.

What they take home:
Real projects they created (custom avatar, interactive app, analysis of a real AI case study). A genuine understanding of how it works. And the ability to use AI responsibly and creatively.

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📌 Conducted coding boot camps and cybersecurity workshops to enhance practical learning.
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verified badge
I’m **Shashi Wijesundara**, an experienced **ICT & Computer Science Teacher with 6+ years of teaching experience**, dedicated to helping students build strong knowledge, confidence, and exam success.

Over the years, I have guided students preparing for **National O/L ICT examinations**, achieving **excellent results and outstanding student performance**. My teaching approach focuses on making difficult concepts simple, practical, and easy to understand.

📚 **Classes Offered:**

- 🇱🇰 **National Grade 06 to O/L ICT ** –

- 💻 **Pearson Edexcel Computer Science** – Grades 01–08

- 🖥️ **Cambridge Computer Science** – Grades 01–09

🎯 **What I Focus On:**

- Strong understanding of ICT & Computer Science concepts
- Exam-oriented teaching and structured revision
- Individual attention and student-focused learning
- Building confidence through practical and engaging lessons
- Helping students achieve their **best possible results**
- Exam-focused preparation with proven results

With **6+ years of teaching experience**, my goal is not simply to teach a subject, but to **inspire students to understand, enjoy, and succeed in ICT & Computer Science**.
verified badge
Unlock the Power of Artificial Intelligence & Smart Automation!

Are you looking to master modern AI tools to boost your productivity, automate tasks, or enhance your tech projects? I offer hands-on, practical training tailored for beginners and tech enthusiasts.

What You Will Learn:
- Prompt Engineering Patterns: How to write effective, precise prompts for ChatGPT and LLMs.
- Practical AI Tools & Workflows: Real-world applications using AI models and APIs.
- Smart Automation: Integrating modern AI solutions into daily tasks, study workflows, and projects.

Why Choose My Sessions?
- Step-by-step guidance tailored to your learning pace.
- Practical examples and hands-on exercises instead of just theory.
- Student-focused approach to help you master modern tech skills.

Book a session today, and let's step into the future of AI together!
verified badge
In this 30-minute class, we will understand the two core components of a microprocessor: the ALU (Arithmetic Logic Unit) and the Control Unit. I will explain their structure, functions, and how they work together to execute instructions, using simple diagrams and practical examples. The goal is to build a clear understanding of how a microprocessor processes and controls data.
verified badge
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verified badge
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I can assist you with general IT, Python, SQL, data analysis, Excel, Power BI, programming, databases, and the use of digital tools.

The courses can also be geared towards homework help, preparation for a school or university project, introduction to programming or development of professional skills.

Having also taught at a secondary school, I place great importance on pedagogy and understanding. My goal is to explain concepts in a simple, progressive, and concrete way, with exercises adapted to your level.

Lessons are offered in French or English, primarily for teenagers and adults, from beginner to advanced levels. I travel to the student's home in Brussels and the surrounding area, with content tailored to their level, goals, and pace.
verified badge
Want to break into systems, legally? Learn penetration testing from someone who does it for a living.

I'm a cybersecurity engineer with 150+ penetration tests and vulnerability assessments for government, financial, and telecom organizations. I hold CRTP, eWPT, and eJPT certifications, and I'll teach you the same methodology I use on real engagements. No boring theory dumps, just live, hands-on practice.

You'll learn:

The pentesting process: scoping, recon, scanning, exploitation, and reporting
Network and web application testing basics
Common vulnerabilities like SQL injection, XSS, and broken authentication
Core tools: Nmap, Burp Suite, Nessus, Metasploit, and Wireshark
How to document findings and write reports that clients actually act on
How to build a home lab and keep practicing on your own

Perfect for: beginners, students, career changers, developers, IT staff, and anyone preparing for eJPT, PNPT, OSCP, or CEH.

You'll walk away with a clear pentesting workflow, real hands-on skills, and a solid roadmap for a career in offensive security.

Basic computer skills are enough, and networking knowledge is a plus. Book your first session and let's start hacking (ethically)!
verified badge
Do you want to learn Excel, become more independent, or improve your skills for your studies or work?
As a computer and office skills teacher, I offer Excel courses tailored to your level and objectives.
We can work on creating and formatting tables, formulas and functions, relative and absolute references, sorting and filtering, conditional functions, data searching, charts, pivot tables and other features as needed.
The courses are practice-based: we work directly on exercises and concrete situations so that you can reuse the skills acquired independently.
The sessions can also be adapted to a professional need, a school course or the preparation for an assessment.
verified badge
Feel free to send me over your questions / material before the class, so we can have a more efficient use of our time.
you can find my LinkedIn here
https://www.linkedin.com/in/gianroccolazzari/
glad to adjust the topics according to your level

I also speak ES/PT
Good-fit Instructor Guarantee
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Contact Linus