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Policy2026-08-25 · source-backed
The site ran silent Web Audio API processing to fingerprint visitors without cookies, generating an inaudible signal at zero volume and measuring small repeatable differences in how each browser and device handled it (Ars Technica). Matt Callaghan found it because the open tab kept dropping his headphones by interfering with multipoint switching. Multiple outlets correct the widely repeated "ultrasound" framing: nothing leaves the speakers, the measurement is purely digital. Brave announced August 22 that it blocks the responsible scripts and says it has defaulted to audio-fingerprinting protection for over six years.
Each link below shares sources, entities, or timing with this story.
Shared entities / Same source domain / Earlier coverage
Both cover Ars Technica, August; reported by the same outlet (arstechnica.com); earlier Ars Technica coverage from 2026-08-21.
Both cover Ars Technica, August; reported by the same outlet (arstechnica.com); earlier Ars Technica coverage from 2026-08-21.
Shared entity: Ars Technica / Same source domain / Shared topic / Earlier coverage
Both cover Ars Technica; reported by the same outlet (arstechnica.com); overlapping topics (browser, cooky).
Shared entity: August / Shared topic / Earlier coverage / Tension
Both cover August; overlapping topics (august, browser); earlier August coverage from 2026-08-24.
Both cover August; overlapping topics (august, found); earlier August coverage from 2026-08-20.
Both cover August; overlapping topics (august, broke); earlier August coverage from 2026-08-17.
Shared entity: Brave / Shared topic / Earlier coverage / Tension
Both cover Brave; overlapping topics (brave, browser); earlier Brave coverage from 2026-08-09.
Shared entity: August / Shared topic / Earlier coverage / Tension
Both cover August; overlapping topics (august, correct); earlier August coverage from 2026-08-08.