Web Security Fundamentals

Learn (and apply!) concepts that 99% of developers struggle with!

Understand Web Security model

Get confidence in building applications diving deep into the Web Security model.

  • Understand the lurking dangers and risks
  • Lock the website content with build-in policies
  • Relax restrictions only when necessary
  • Develop with maximum security and peace of mind

Play with real code examples

Gain total clarity with LABS presenting underlying concepts with practical examples (see it in action).
  1. Watch the explanation videos
  2. Download source code
  3. Run the examples
  4. Hit DevTools to analyze in-depth
  5. Apply in your projects

Protect your customers

Hackers are trying to break into Web-based systems over the Internet on daily basis. Unfortunately, when security is neglected they often succeed. That results in significant financial losses, not to mention reputation damage for the companies. 😡
Step ahead and become a security hero! πŸ¦Έβ€β™‚οΈ

In less that 1 hour you will...

βœ”οΈ Learn about the most important Web Security principle that dictates how browsers run the websites (Same-origin policy rules them all!),

βœ”οΈ Understand the reason behind CORS errors (yes, yes - this infamous No Access Control Allow Origin headers is present error!),

βœ”οΈ Build a standard cross-site scripting attacks prevention shield (yes, there is a standard way to prevent XSS),

βœ”οΈ Set up reporting features to catch attack attempts (yes, there are also standards for that!),

βœ”οΈ Create integrity checks on external scripts (again, to eliminate the risk of XSS attacks!).

What students say

Bartosz Pietrucha


  • Taught hundreds of developers around the World
  • Holds a Master's degree in Computer Science
  • Spoke at conferences like AngularUP, ngVikings, NG-Colombia, JSConf.be, HolyJS and more
  • Worked at companies like Credit Suisse, UBS, F-Secure, Tecnotree building enterprise software
  • Runs WebSecurity Academy program



The materials are designed to give you 10x more value than you expect. But, if for whatever reason you will not be satisfied, then you can write an email within 30 days since your purchase to [email protected] and I will give you the money back.

My goal is to help you and give as much value as possible.


Clickable PDF - Web Application Security Checklist

Got Questions?

Feel free to email me at

[email protected]


This training is for developers who want to understand the WHAT, WHY, and HOW, instead of copy-pasting the code snippets from StackOverflow.

If you expect some dirty hacks or shortcuts, you will not find them here!