CPU Concurrency Test

Reveals how many logical processors your device has, adding entropy to your fingerprint.

JavaScript is disabled.

This tool requires JavaScript to execute locally in your browser. Since you have JS disabled, you are highly protected against this specific tracking vector. Great job!

Running test...

Why does this matter?

Modern tracking isn't just about cookies. It's about combining dozens of small, seemingly innocent data points (like your OS version, GPU model, and timezone) into a unique hash. This is called Browser Fingerprinting.

How to fix it

Use Mullvad Browser or Tor Browser.
Use Brave (it randomizes these outputs).
Follow our Firefox Hardening Guide to enable privacy.resistFingerprinting.
Avoid Chrome, which leaves these metrics wide open.