Websites can look at version numbers of your browser, the plugins it uses, and dozens of other points of browser information to create a unique ID, a browser fingerprint, that can then be used to track you.
Privacy Mythbusting #4: I can’t be identified just by browsing a website. (If only!)
DuckDuckGo
563

Interesting because this defeats the purpose of a VPN to hide the identity of a user.

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