Browsers Fight Fingerprinting by Randomizing, Blending In, or Blocking Data

Browsers can expose hardware details such as the graphics card model, which trackers use to build a fingerprint that identifies a user across sites. Protection methods target either distinctiveness or stability: some browsers make values identical so users blend into a crowd, while others add small random noise that changes per site and per session. A third approach blocks known fingerprinting scripts or withholds the data entirely. Brave, for instance, reports only its own name for the GPU vendor and renderer, and Firefox 151, released in May 2026, alters exported canvas images in each session. Which method suits a given value depends on whether it can be subtly altered without breaking pages or must instead be replaced with a generic value.