What your browser reveals
Every website can read your user agent, language preferences, time zone, screen size, number of CPU cores and graphics card. Combined with a canvas rendering hash, these attributes form a browser fingerprint that can identify you across sites even without cookies.
Privacy-focused browsers such as Tor Browser, Brave and Firefox with resistFingerprinting reduce this surface by making many users look identical.
よくある質問
Does a VPN hide my fingerprint?
No. A VPN changes your IP address, but fingerprinting uses browser properties that stay the same.
Is a user agent personal data?
On its own it is not unique, but combined with other attributes it can contribute to identifying a person.