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July 9th, 2016 
Awake Goy Kitten videos are harmless, right? Except when they take over your phone.
Researchers have found something new to worry about on the internet. It turns out that a muffled voice hidden in an innocuous YouTube video could issue commands to a nearby smartphone without you even knowing it.
The researchers describe the threat in a research paper to be presented next month at the USENIX Security Symposium in Austin, Texas. They also demonstrate it in this video.
Voice recognition has taken off quickly on phones, thanks to services like Google Now and Apple’s Siri, but voice software can also make it easier to hack devices, warned Micah Sherr, a Georgetown University professor and one of the paper’s authors.
The team found that they could mangle voice commands so that humans can barely recognize the words but software still can. The result condenses the words into a demonic growl.
“Ok Google, Open XKCD.com,” the voice says, and a nearby phone opens that URL.
It’s easy to imagine how a hacker could direct a phone to a website containing malware, or instruct the phone to take a photo.
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