DolphinAttack — Inaudible Ultrasonic Voice Commands: Detection, Live Browser FFT, Countermeasures

Scene 89 — DolphinAttack (Zhang et al., CCS 2017): how ultrasonic AM-modulated commands at 25–40 kHz silently control Siri, Alexa, and Google Assistant. Live browser microphone FFT detector, TinySA detection guide, vulnerable device list, and countermeasures.

Scene 89 of 109 in the StopBeingParanoid interactive 3D research collection. Requires JavaScript and WebGL2 for the interactive visualisation.

Related scenes

RF Hardware Cross-Reference — RTL-SDR, HackRF, TinySA Ultra Across All 88 Scenes
Acoustic Beamforming: Audio Spotlight Detection — Phased Array, Parametric Audio, Live Position Test

Elsewhere on this site

Home
All 109 scenes — complete index
Acoustic Spectrum Lab — live FFT demo
RF Academy — free 9-module curriculum
Field notes
Paranoia, fear & mental health — how to get help

If any of this frightens you: this site documents what signal physics makes possible in a laboratory, which is not evidence about what is happening to any individual. If you feel watched, targeted or unsafe, that distress is real and treatable. Read about paranoia, mental health and how to get help, or call a free 24/7 line — 988 in the US and Canada, 116 123 in the UK and Norway, 13 11 14 in Australia, or find your country at findahelpline.com.