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Index/Topics/Fingerprinting detection and testing

Fingerprinting detection and testing

Methods and tools for detecting and testing browser fingerprinting, including EFF's Cover Your Tracks and PrivacyTests.org

Fact-Checks

3 results
Jan 21, 2026
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How does the EFF Cover Your Tracks test determine browser uniqueness and what signals does it use?

is the interactive successor to that evaluates how uniquely a browser appears to trackers by collecting a wide set of browser- and device-level signals and reporting a combined “bits of identifying in...

Feb 6, 2026

How do EFF Cover Your Tracks and AmIUnique measure uniqueness and what do their scores mean?

Cover Your Tracks and are diagnostic tools that measure how “unique” a ’s fingerprint is by collecting observable browser and device attributes and comparing them to a database of other collected fing...

Feb 6, 2026

Does factually fingerprint my browser

Yes: modern browsers routinely leak enough signals that websites and ad/fraud networks can build identifying “fingerprints” of a client, and those fingerprints are widely used for tracking and securit...

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