this post was submitted on 20 Nov 2025
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Browser Fingerprinting And Why VPNs Won’t Make You Anonymous (hackaday.com)
submitted 2 days ago by tonytins@pawb.social to c/technology@lemmy.world
102 comments fedilink hide all child comments
 

Amidst the glossy marketing for VPN services, it can be tempting to believe that the moment you flick on the VPN connection you can browse the internet with full privacy. Unfortunately this is quite far from the truth, as interacting with internet services like websites leaves a significant fingerprint. In a study by [RTINGS.com] this browser fingerprinting was investigated in detail, showing just how easy it is to uniquely identify a visitor across the 83 laptops used in the study.

As summarized in the related video (also embedded below), the start of the study involved the Am I Unique? website which provides you with an overview of your browser fingerprint. With over 4.5 million fingerprints in their database as of writing, even using Edge on Windows 10 marks you as unique, which is telling.

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[–] GreenShimada@lemmy.world 3 points 19 hours ago (1 children)

Not your ISP. Google likely is the one following that. If you have uBlock Origin installed, click on the badge on any site and you'll see which trackers there are. For Lemmy, it's just going to list other lemmy instances. When you're on that forbidden site, see if they have any Google analytics trackers - those are what will fingerprint you.

Then go to amiunique.org or hidemytracks.eff.org and see what information you're giving up. Vanilla FF gives up fonts, sound card info, and graphics info, which are enough to pin you to specific hardware. If your machine isn't extremely common, then Google knows it's you.

Why not download the Mullvad browser? It's free, and you're paying for its development if you're paying for the VPN.

[–] Blackfeathr@lemmy.world 1 points 18 hours ago

I'll give that a try, thank you!