Start here
Cookies
What they are, why deleting all of them logs you out, and which ones actually matter.
Tracking
Cross-site identifiers, pixels, and the click IDs hiding in your links.
Fingerprinting
How a site can recognise your browser without storing anything at all.
Privacy controls
Global Privacy Control, consent banners, permissions, and private browsing.
Security basics
Passkeys, MFA, phishing, HTTPS — and honestly, what a VPN does not do.
Cookie encyclopedia
Look up a cookie name and find out who set it and why.
Our editorial rules
Everything here separates what is known from what is likely from what is inference. Entries carry sources and a last-reviewed date. If we get something wrong, we correct it and say that we did.
We do not use fear to make a point. Most third parties on a page are doing a job somebody asked for. The interesting question is never "is there a cookie" — it is "who benefits from this one".