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The Hacker News - Cybersecurity News and Analysis: Voice Assistant

Hackers Can Use Ultrasonic Waves to Secretly Control Voice Assistant Devices

Hackers Can Use Ultrasonic Waves to Secretly Control Voice Assistant Devices
March 02, 2020Ravie Lakshmanan
Researchers have discovered a new means to target voice-controlled devices by propagating ultrasonic waves through solid materials in order to interact with and compromise them using inaudible voice commands without the victims' knowledge. Called " SurfingAttack ," the attack leverages the unique properties of acoustic transmission in solid materials — such as tables — to "enable multiple rounds of interactions between the voice-controlled device and the attacker over a longer distance and without the need to be in line-of-sight." In doing so, it's possible for an attacker to interact with the devices using the voice assistants, hijack SMS two-factor authentication codes, and even place fraudulent calls, the researchers outlined in the paper, thus controlling the victim device inconspicuously. The research was published by a group of academics from Michigan State University, Washington University in St. Louis, Chinese Academy of Sciences, and the Un

Hackers Can Silently Control Your Google Home, Alexa, Siri With Laser Light

Hackers Can Silently Control Your Google Home, Alexa, Siri With Laser Light
November 05, 2019Mohit Kumar
A team of cybersecurity researchers has discovered a clever technique to remotely inject inaudible and invisible commands into voice-controlled devices — all just by shining a laser at the targeted device instead of using spoken words. Dubbed ' Light Commands ,' the hack relies on a vulnerability in MEMS microphones embedded in widely-used popular voice-controllable systems that unintentionally respond to light as if it were sound. According to experiments done by a team of researchers from Japanese and Michigan Universities, a remote attacker standing at a distance of several meters away from a device can covertly trigger the attack by simply modulating the amplitude of laser light to produce an acoustic pressure wave. "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," the researchers said in their paper [ PDF ]. Doesn't this so

Hackers Can Silently Control Siri, Alexa & Other Voice Assistants Using Ultrasound

Hackers Can Silently Control Siri, Alexa & Other Voice Assistants Using Ultrasound
September 07, 2017Swati Khandelwal
What if your smartphone starts making calls, sending text messages, and browsing malicious websites on the Internet itself without even asking you? This is no imaginations, as hackers can make this possible using your smartphone's personal assistant like Siri or Google Now. A team of security researchers from China's Zhejiang University have discovered a clever way of activating your voice recognition systems without speaking a word by exploiting a security vulnerability that is apparently common across all major voice assistants. DolphinAttack (Demo): How It Works Dubbed DolphinAttack , the attack technique works by feeding the AI assistants commands in ultrasonic frequencies, which are too high for humans to hear but are perfectly audible to the microphones on your smart devices. With this technique, cyber criminals can "silently" whisper commands into your smartphones to hijack Siri and Alexa, and could force them to open malicious websites and even
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