Keep Alexa away from all windows: Turns out hackers can shine lasers at your Google Assistant or Amazon Alexa-enabled devices and gain control of them, sending commands to the smart assistants or obtaining your valuable account information.

Researchers proved this by using lasers to inject malicious commands into voice-controlled devices like smart speakers, tablets, and phones across long distances through glass windowpanes.

In a new paper, “Light Commands: Laser-Based Audio Injection Attacks on Voice-Controllable Systems,” the authors describe the laser-based vulnerability as a “signal injection attack” on microphones based on the photoacoustic effect, which converts light to sound through a microphone.

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