DolphinAtack: Inaudible Voice Commands · HackerPapers discussions

DolphinAtack: Inaudible Voice Commands — mentioned by dijksterhuis

Sun, 16 Feb 2020 12:42:06 GMT

Dolphin Attack used ultrasonic amplitude modulation against a variety of devices with some success [0]. Page 9 for the results table. I believe they were taking advantage of the non linearity of microphones. 0: https://arxiv.org/pdf/1708.09537.pdf

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DolphinAtack: Inaudible Voice Commands — mentioned by dijksterhuis

Sun, 16 Feb 2020 12:31:48 GMT

Filter won’t necessarily help. It’s possible to use ultra sonic for amplitude modulation signal to affect the non linearity of a microphone itself. [0] Although it does require knowing what the underlying natural sound to be modulated is (some processing required). Robustness to background noise doesn’t necessarily help either. 0: https://arxiv.org/pdf/1708.09537.pdf

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DolphinAtack: Inaudible Voice Commands — mentioned by hansschouten

Thu, 06 Feb 2020 18:20:21 GMT

Interesting attack. Reminds me of the DolphinAttack (https://arxiv.org/abs/1708.09537)

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DolphinAtack: Inaudible Voice Commands — mentioned by johnnycab

Fri, 08 Mar 2019 20:38:04 GMT

The inaudible range is far more likely to used as an attack vector for nefarious purposes. https://arxiv.org/pdf/1708.09537.pdf https://arstechnica.com/information-technology/2017/05/there...

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DolphinAtack: Inaudible Voice Commands — mentioned by _underfl0w_

Tue, 08 Jan 2019 16:09:55 GMT

Completely agree. I use multiple ad- and tracker-blocking browser extensions, but mostly due to the tracking. Incidentally, while blocking ads online can be noticed by the serving party (to e.g. display an annoying warning) those behind the goods/services being verbally advertised are none the wiser. > There are ways to overlay inaudible tones Are you referencing prior work or was that hypothetical? There is actual prior work on this. They were able to engineer a POC that could trigger "Hey Siri" and "OK Google" inaudibly by broadcasting it with ultrasound on a harmonic of the correct…

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DolphinAtack: Inaudible Voice Commands — mentioned by ploxiln

Sat, 07 Jul 2018 16:52:05 GMT

Sure, good idea: https://arxiv.org/pdf/1708.09537.pdf

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DolphinAtack: Inaudible Voice Commands — mentioned by cozzyd

Fri, 11 May 2018 03:43:46 GMT

That's clever but that's so many dB down with any sane anti-aliasing filter that it would require quite the sound source. Based on flipping through the pages of the paper (https://arxiv.org/pdf/1708.09537.pdf), it looks like they're taking advantage of the non-linearity in the response at high frequencies to effectively demodulate a lower-frequency signal that was mixed up to ~22 KHz. Which, if that's what they're doing, is totally awesome!

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DolphinAtack: Inaudible Voice Commands — mentioned by nomel

Fri, 15 Sep 2017 21:37:38 GMT

In case anyone missed it, the commands don't have to be audible: From https://arxiv.org/pdf/1708.09537.pdf > DolphinAttack ... modulates voice commands on ultrasonic carriers ... to achieve inaudibility. By leveraging the nonlinearity of the microphone circuits the modulated ... commands can be successfully demodulated

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DolphinAtack: Inaudible Voice Commands — mentioned by satysin

Fri, 15 Sep 2017 20:24:02 GMT

Check out DolphinAttack Demo: https://www.youtube.com/watch?v=21HjF4A3WE4 Paper: https://arxiv.org/pdf/1708.09537.pdf

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DolphinAtack: Inaudible Voice Commands — HN submission

Wed, 06 Sep 2017 17:32:18 GMT

DolphinAttack: Inaudible Voice Commands

2 points; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.

DolphinAtack: Inaudible Voice Commands — HN submission

Sun, 03 Sep 2017 20:54:03 GMT

DolphinAtack: Inaudible Voice Commands

3 points; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.