Browser Security - Browser-Language Fingerprinting and Total Cookie Protection

upstart writes:

Protecting Against Browser-Language Fingerprinting:

Brave has further strengthened its fingerprinting protections by preventing users from being identified based on preferred browser language. Starting with version 1.39, Brave randomizes how your browser informs sites of what language(s) you've set as default, and what fonts you have installed on your system. This expands Brave's existing fingerprinting protections, already the strongest of any popular browser.

When you visit a website, your browser needs to tell that site your default language(s). This helps the site present content in a language you can understand. Browsers do this both explicitly (for example, with the Accept-Language header, and the navigator.language and navigator.languages Web APIs) and implicitly (for example with the fonts you have installed on your system).

However, as with so much online, features meant to improve your experience often just expose you to more risk. In this case, trackers can use your language preferences (both implicit and explicit) to fingerprint you, identifying you across sites and browsing sessions.

Brave's unique "farbling" features already provide the best fingerprinting protections of any popular browser. These add small amounts of randomization into identifying browser features-enough to confuse and defeat trackers, but not so much that they break sites. With this latest release, Brave has expanded "farbling" protections to language preferences, too.

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