Every click leaves a trace. This theme explores how the internet actually works (encryption, tracking, cookies, VPNs) and gives you the tools to understand and take control of your digital footprint.
Why this theme matters
Your browsing data is worth money. Advertisers and data brokers collect it constantly without your awareness.
Your devices broadcast your location, identity and habits to dozens of third-party trackers on every page visit.
Privacy is a fundamental right: understanding the systems that erode it is the first step to protecting it.
What you'll learn
HTTPS & encryption
How your data is protected in transit and what the padlock in your browser actually means.
Cookies & tracking
What cookies are, who uses them and how to control what you share.
VPNs & anonymity
What a VPN actually hides (and what it doesn't) and when anonymity tools like Tor make sense.
GDPR & data rights
Your rights over your personal data and how to exercise them.
Metadata
How photos, documents and messages reveal far more than their visible content.
DNS & network basics
How your device finds websites, and what this reveals about your activity.