S Scrapfly Blog company blog

Since Chromium 148, Math.tanh is now fingerprintable to link underlying OS

by Scrapfly Engineering scrapfly.dev published 2026-07-12

Math.tanh, every CSS trig function, and the Web Audio compressor all route through the host libm, so the rounding of a cosine betrays the OS a browser actually …

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Security & PrivacyWeb & Frontend2026

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