a reply to:
Waterglass
I am sorry, this is quite a lengthy post.
I am avoiding an indepth explanation, but I would like to offer a very high-level view.
Even if you block ALL browser cookies (which will render most websites you visit unrenderable to your browser), google has a large number of other
tricks to follow your web navigation and history
Many websites, I might even say most, use some sort of service from google.
If you install "NoScript" browser plug in, you will see the websites that use a google server in some way or another.
With google in mind you will often find websites use one or more of the services below. google provides service such as fonts, _javascript, images
etc.
gstatic.com
ajax.googleapis.com
youtube.com
googlevideo.com
google.com
google-analytics.com
maps.googleapis.com
fonts.googleapis.com
googlesyndication.com
This is not a complete list, just the more common ones you may come across.
Each of these google services can pick up your IP address, and interrogate your browser's capability - such as browser version-number, the installed
plugins, inbuilt webrtc (exposes your IP) etc. A lot more info than this is revealed by your browser.
Google can then build a digital footprint of your browser session. Google (and others) attempts to collate these signature across multiple
websites.
At some point you will log into a site, and then they can cross reference you login-identity to your ip and browser-signature, and then they have
history you your personal surfing history. Goole has claimed in the past, to statistically identify you in just three browser clicks.
Web browsers have several inbuilt optimisations that are said to provide a 'faster surfing experience'. This means that the browser will pre-visit
links in the background, even if you dont actually tell your browser to visit them. If a webpage has a link, your browser can previsit the site in the
background, just in case you want to go there.
There are other things that can be leaked directly by your browser. For example see the firefox settings
network.dns.disablePrefetch
network.prefetch-next
There are many other too, things that are automatically in the background to improve your surfing experience.
Many popular free DNS services use the google cloud DNS servers behind-the-scene - they've got you again. You never quite know where you are
connecting to for DNS - (do some research DNS interception techniques) - again google cloud comes into the picture. Many public DNS servers provided
by internet service providers, they often log you web site DNS lookup, and then pass the request onto the google cloud. An IP/DNS trace tool will not
detect this - it is hidden behind the intercepting server. DNS lookup over HTTPS will sometimes help - but is still prone to intercept.
Your browser will also periodically check and update its internal security-certificates - needed to surf secure websites over https etc. Oops, there
goes you IP to google again.
To make it more difficult to 'hide' from services such as google, you have to jump through many hoops - even using a country hopping VPN will not
fully protect you from google's prying eyes.
There are so many hoops to jump through to reduce you google footprint, even if that is actually possible today. There is no one-off solution.
For the real paranoid, you need to install network monitoring software, and see what information you are leaking to the world, and adjust your browser
filters, plugins accordingly.
Do a search for the channel "Rob Braxman Tech" on the odysee video platform. He outlines some technologies, and more importantly, behaviours, that you
will need to adopt to reduce your online surfing footprint.
Happy Hiding!
GP
edit on 24-5-2022 by GrumpyPants because: spelling