DolphinAttack: Inaudible Voice Commands
Date: 2017-10
Affected: Siri, Alexa, Google Now, Cortana, S Voice, Audi navigation
Attack vector: adversarial-input
Category: research
Severity: High

Zhang et al. modulate voice commands on ultrasonic carriers (>20 kHz) and exploit microphone nonlinearity to silently command Siri, Alexa, Google Now, Cortana, S Voice, and an Audi navigation system. ACM CCS 2017.


Mitigations:

Architectural layers (MAESTRO):