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Home / News / Science News / How Alexa, Google Assistant can be hacked using lasers/flashlight
  • Science

    How Alexa, Google Assistant can be hacked using lasers/flashlight

    Shubham Sharma
    Written by
    Shubham Sharma
    Twitter
    Last updated on Nov 09, 2019, 03:40 pm
    How Alexa, Google Assistant can be hacked using lasers/flashlight
  • Google Assistant, Amazon Alexa, Apple's Siri have long drawn flak, primarily due to concerns around how they store/use our intimate user conversations.

    Now, researchers from Japan and the University of Michigan have proliferated those fears, claiming that anyone can hack these 'smart' AI assistants by way of a simple laser or flashlight.

    Here's all you need to know about it.

  • In this article
    MEMS mic vulnerability exploited to compromise voice assistants How smart speaker is tricked into taking 'light command' In tests, they hacked assistants from 350 feet away Now, this is a major point of concern Currently, there is no way to tackle this issue
  • Hack

    MEMS mic vulnerability exploited to compromise voice assistants

    MEMS mic vulnerability exploited to compromise voice assistants
  • In a recent blog post, the research team flagged a vulnerability in the MEMS (microelectro-mechanical systems) microphones used by home assistant products.

    They said this little known flaw opens the way to inject inaudible and invisible commands into beams of light (laser/flashlight) and then use the same to hack/control Siri, Alexa, or Google Assistant from hundreds of feet away.

  • Quote

    How smart speaker is tricked into taking 'light command'

  • "In addition to sound, microphones also react to light aimed directly at them," the researchers explained, noting that "by modulating an electrical signal in the intensity of a light beam, attackers can trick microphones into producing electrical signals as if they are receiving genuine audio."

  • Demonstration

    In tests, they hacked assistants from 350 feet away

  • The researchers demonstrated the hack and claimed they were able to use laser lights to compromise Google Home and other smart home assistants from as far as 350 feet away.

    In one case, they controlled a Google Home device positioned in an office building from the top of the University of Michigan's bell tower some 230 feet away.

  • Risk

    Now, this is a major point of concern

    Now, this is a major point of concern
  • According to the researchers, hackers can easily apply this technique to compromise smart home devices that are otherwise marketed as a solution to make your home secure.

    For instance, they could use light-inject commands and tell Assistants to open your home's smart-lock protected front door.

    However, it is not an easy attack. The attackers need a direct line of sight to the target.

  • Solution

    Currently, there is no way to tackle this issue

    Currently, there is no way to tackle this issue
  • The researchers say the technique can compromise any device using the MEMS microphone and there's no way to stay protected against it.

    However, they do claim to be working with researchers at Google, Apple, and Amazon to develop appropriate defense mechanisms that can be incorporated into the future models of their smart home assistants.

    So, till then, keep your Assistant indoors, away from lasers!

  • Japan
  • Google
  • Amazon
  • Apple
  • Amazon Alexa
  •  
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