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Browser Fingerprinting And Why VPNs Won’t Make You Anonymous
(hackaday.com)
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this post was submitted on 20 Nov 2025
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It's always kind of funny when the Technology folks wade into well-researched and well-worn Privacy territory.
Do you want to not wave a giant flag of your activity to Google, Meta, MS, and your ISP when you do literally anything online? Either use a VPN and Mullvad (or Librewolf, but YMMV) browser, OR a VPN and Tor OR Tor with an https bridge if paying for a VPN will make you a target (Tor bridges are not for casuals, save them for those in genuine need).
VPN locations need to be changed. Frequently. Router level VPN at home becomes your "This is me" location, then make use of VPNs on each device when you want an extra layer of obfuscation.
There's not a lot of middle ground at this point, and it's not difficult.
Does that mean my ISP can still detect if I'm going to websites they don't approve of if I'm using Mullvad as my VPN but using Firefox as my browser?
No, with a VPN the only thing your ISP sees is you connecting to a VPN server IP.
But browser finger printing, on the other hand, can identify you to every website you visit, due to info your browser hands over to every website... Such as OS version, Resolution, installed Plugins, browser settings, geolocation info, etc..which is often unique enough to identify you out of the whole of the internet.
Ironically, locking your browser down with more security features/settings/plugins often makes you more identifiable. Cause capitalism is god damned sure they are gonna track you and monetize the hell out of your information, whether its via your name, your user name, or just your digital fingerprint.
https://coveryourtracks.eff.org/
Your ISP can’t tell who you are contacting if you are using a VPN, but websites will track you by other means.
You and a thousand other people.
Yeah, but fingerprinting is effective by cross referencing.
There are 1,000 people with the IP 1.2.3.4
There are 500 people with the IP 1.2.3.4 using Firefox
There are 25 people with the IP 1.2.3.4 using Firefox with a 1440p screen
There are 2 people with the IP 1.2.3.4 using Firefox with the dark reader extension with a 1440p screen at 75Hz
etc.
So rotating the IP can screw with that.