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
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
6 Comments
Tomi Engdahl says:
Jamming the people
https://www.wired.com/2012/03/japanese-speech-jamming-gun/
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’
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
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.
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.
Fluix Software says:
The new attack exploits the non-linear nature of MEMS microphone circuits to transmit harmful ultrasonic signals. To do this, the experts used a simple $ 5 piezoelectric transducer that was attached to the tabletop. To hide what was happening from the victim, the researchers adjusted the volume of the attacked device’s responses using a directed ultrasonic command, but they themselves were still able to record the assistant’s voice responses through a hidden “bug” located under the table.