Silent attacks against voice assistants

Now there are two attack vectors to send commands to voice assistant from distance without anyone in the room hearing: ultrasounds and laser.

Audio Hotspot Attack Crosses the Ultrasonic Beams to Send Silent Commands to Voice Assistants

https://www.hackster.io/news/audio-hotspot-attack-crosses-the-ultrasonic-beams-to-send-silent-commands-to-voice-assistants-6d386644111b

Lasers Can Take Over Voice Assistant Systems From Long Distances, Research Finds
https://securitytoday.com/articles/2019/11/06/laser-hack-alexa-voice-assistants.aspx?m=1

https://news.umich.edu/a-laser-pointer-could-hack-your-voice-controlled-virtual-assistant/
From a distance of more than 300 feet and through a glass window, a laser beam can trick a voice-controlled virtual assistant like Siri, Alexa or Google Assistant

https://youtu.be/ORji7Tz5GiI

5 Comments

  1. Tomi Engdahl says:

    https://news.umich.edu/a-laser-pointer-could-hack-your-voice-controlled-virtual-assistant/

    Researchers identified a vulnerability that allows a microphone to ‘unwittingly listen to light as if it were sound’

    Reply
  2. Tomi Engdahl says:

    All of us knew this was possible.

    Breaking Into a Smart Home With A Laser – Smarter Every Day 229
    https://m.youtube.com/watch?feature=youtu.be&v=ozIKwGt38LQ

    This work was performed by a team of researchers at the University of Michigan and University of Electro-Communications in Japan. For more information check out their website http://lightcommands.com

    Reply
  3. Tomi Engdahl says:

    Light Commands can hack voice assistants and other smart devices using a laser beam to target their MEMS-based mic using inaudible commands.

    Researchers Use Laser Light Commands to Hack Smart Devices
    https://www.hackster.io/news/researchers-use-laser-light-commands-to-hack-smart-devices-1937ab96e332

    Light Commands can hack voice assistants and other smart devices using a laser beam to target their MEMS-based mic using inaudible commands.

    Reply
  4. Tomi Engdahl says:

    SurfingAttack Sends Ultrasonic Commands to Phones, Smart Speakers Through the Table Surface
    https://www.hackster.io/news/surfingattack-sends-ultrasonic-commands-to-phones-smart-speakers-through-the-table-surface-a17945abcd0f

    By transmitting commands through the surface of a table, researchers have successfully attacked voice assistants without detection.

    Reply

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