Hacking Voice Assistant Systems with Inaudible Voice Commands

Turns out that all the major voice assistants — Siri, Google Now, Samsung S Voice, Huawei HiVoice, Cortana and Alexa — listen at audio frequencies the human ear can’t hear. Hackers can hijack those systems with inaudible commands that their owners can’t hear. News articles….

Turns out that all the major voice assistants -- Siri, Google Now, Samsung S Voice, Huawei
HiVoice, Cortana and Alexa -- listen at audio frequencies the human ear can't hear. Hackers can hijack those systems with inaudible commands that their owners can't hear.

News articles.

from https://www.schneier.com/blog/