According to a report by
Arstechnica.com an inaudible command can be sent to language assistants like Amazon Echo, but also to many smartphones using a laser. The devices then react as if they were ghostly and execute the command without audible sound. The vulnerability was discovered by scientists at the
University of Michigan. Details have been published by the discoverers on their own website
Lightcommands.com.
As demonstrated in the videos, the hack uses a low-frequency beam of light that is interpreted as a voice command by the speech assistants‘ microphones. For example, the scientists succeeded in opening a garage door from a distance.
The affected devices also include current smartphones such as the...
