Researchers used a laser to hack Alexa and other voice assistants

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San Francisco (CNN Business)Usually you have to talk to voice assistants to get them to do what you want. But a group of researchers determined they can also command them by shining a laser at smart speakers and other gadgets that house virtual helpers such as Amazon’s Alexa, Apple’s Siri and Google’s Assistant.

Researchers at the University of Michigan and Japan’s University of Electro-Communications figured out they could do this silently and from hundreds of feet away, as long as they had a line of sight to the smart gadget. The finding could enable anyone (with motivation and a few hundred dollars’ worth of electronics) to attack a smart speaker from outside your house, making it do anything from playing music to opening a smart garage door to buying you stuff on Amazon.

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