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The Hacker News - Cybersecurity News and Analysis: voice command

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

Android 'Trusted Voice': My Voice Is My Password

Android 'Trusted Voice': My Voice Is My Password
April 14, 2015Mohit Kumar
Today device unlocking has become far more secure over the years, from PIN number unlock to Pattern unlock and biometric unlocks including fingerprinting and facial recognition. But... ...What If Your Android Device Can Identify Your Voice before authenticating any access? This exactly what Google is trying to provide its Android 5.0 Lollipop users. Users running Android 5.0 Lollipop on their smartphone devices may soon be able to unlock their devices simply by saying " OK Google ." " Smart Lock " is one of the most convenient security features provided in Lollipop that offers a handful of clever ways to unlock an Android device automatically, which yet includes: Trusted Device Trusted Places Trusted Face However, Google is now rolling out a new smart lock, dubbed " Trusted Voice ," that uses your voice as a password to unlock your device. Just as your fingerprint or face recognition is considered distinctive enough for biom
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