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In this short class, we will take a technical look at browser cookies and try to understand what they really are and why the internet as we know it today cannot work without cookies.

We will also go a bit into the privacy concerns around cookies, and I will show you a way to get rid of all these cookie popups without impacting your privacy.

⭐️ Video contents ⭐️

⌨️ 00:00 - Lesson 1: Introduction
⌨️ 00:24 - Lesson 2: The need for personalization
⌨️ 02:17 - Lesson 3: When were cookies invented?
⌨️ 03:35 - Lesson 4: Why are cookies called "COOKIES"?
⌨️ 04:14 - Lesson 5: How cookies work
⌨️ 06:17 - Lesson 6: Functional cookies
⌨️ 07:30 - Lesson 7: Cookies as a privacy issue
⌨️ 08:51 - Lesson 8: How does a tracking pixel work?
⌨️ 10:08 - Lesson 9: User identification and tracking with cookies
⌨️ 13:04 - Lesson 10: The end of 3rd party cookies
⌨️ 14:47 - Lesson 11: Browser fingerprinting
⌨️ 15:30 - Lesson 12: Getting rid of cookie banners
⌨️ 16:49 - Lesson 13: Conclusion

⭐️ Assignment 1 ⭐️

The purpose of this assignment is to understand how cookies are being handled by your browser. The examples are using Google Chrome.

Getting Started - Watch the explanation given in Lesson 6.

Tools needed - Google Chrome browser.

Step 1: Open the Developer Tools in your browser.

Step 2: Open this website: https://cookie-tracking.glitch.me/ (may take a minute to load)

Step 3: Inspect the first request being sent. Notice the Set-Cookie header in the HTTP response.

Step 4: Reload the page and inspect the second request being sent. Notice the Cookie header in the HTTP request.

Step 5: Make two screenshots of your browser Developer Tools showing the Set-Cookie and Cookie header.

Step 6: Delete the cookie using the Developer Tools.

⭐️ Assignment 2 ⭐️

The purpose of this assignment is to understand how a tracking pixel works.

Getting Started - Watch the explanation given in Lesson 8.

Step 1: Open the Developer Tools in your browser.

Step 2: Open this website: https://cookie-tracking.glitch.me/ and delete the cookies.

Step 3: Open this website: https://new-cookie-times.glitch.me/

Step 4: Go back to the https://cookie-tracking.glitch.me/ and notice how you are being recognized as a returning visitor.

Step 5: Inspect the request to the tracking website that is being sent in the background.

⭐️ 📩 Contact & Imprint ⭐️

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