- From: Frederick Hirsch <w3c@fjhirsch.com>
- Date: Thu, 18 Feb 2016 12:04:51 -0500
- To: Christine Runnegar <runnegar@isoc.org>
- Cc: "norcie@cdt.org" <norcie@cdt.org>, "David (Standards) Singer" <singer@apple.com>, Joseph Lorenzo Hall <joe@cdt.org>, Chaals McCathie Nevile <chaals@yandex-team.ru>, "public-privacy (W3C mailing list)" <public-privacy@w3.org>
In case it is helpful, here is the link for the Vibration API with the proposed changes in place, if you want to see them in context. https://rawgit.com/anssiko/vibration/rec-errata/index.html This is the redline showing all changes in the associated pull request, including the privacy related changes https://github.com/w3c/vibration/pull/1/files regards, Frederick Frederick Hirsch Chair, W3C Device APIs WG (DAP) www.fjhirsch.com @fjhirsch > On Feb 17, 2016, at 12:35 AM, Christine Runnegar <runnegar@isoc.org> wrote: > > Charles, > > If this works for you and the Device API WG, let’s add this to the agenda for our next call (Thursday 26 February 2016 at UTC 17). > Anyone from DAP who would like to join, would be most welcome. > > In the meantime, everyone, please continue sharing your perspectives on this thread. > > Christine > > >> On 17 Feb 2016, at 2:40 AM, Greg Norcie <gnorcie@cdt.org> wrote: >> >> Would they be too faint? IIRC tempest attacks have picked up keystroke noises: >> >> https://www.schneier.com/blog/archives/2005/09/snooping_on_tex.html >> >> Couldn't a microphone also pick up vibration noises? >> >> >> >> /********************************************/ >> Greg Norcie (norcie@cdt.org) >> Staff Technologist >> Center for Democracy & Technology >> District of Columbia office >> (p) 202-637-9800 >> PGP: http://norcie.com/pgp.txt >> >> CDT's Annual Dinner (Tech Prom) is >> April 6, 2016. Don't miss out! >> learn more at https://cdt.org/annual-dinner >> /*******************************************/ >> >> On Tue, Feb 16, 2016 at 8:06 PM, David (Standards) Singer <singer@apple.com> wrote: >> yes, an obvious question is ‘beaconing’ using vibration. >> >> I guess this becomes more of a question for users with more than one device — especially a second device that has motion sensing. But the two devices would have to be awfully close for vibration to transfer. >> >> >> >>> On Feb 16, 2016, at 12:30 , Joseph Lorenzo Hall <joe@cdt.org> wrote: >>> >>> Are those two things or just one? That is, is this section claiming: >>> 1) it is possible to fingerprint a device through the Vibration API by >>> requesting information that could be used to uniquely identify a >>> device by characterizing "tiny imperfections during their >>> manufacturing"; and 2) it is possible for an external observer to >>> identify someone close to them in physical reality ("meat space") by >>> causing the user to visit a specific web page that then uses the >>> Vibration API to vibrate the device (and the external observer >>> observes this and connects a particular web session with a particular >>> device)? >>> >>> Looking at the spec, it just accepts a list of integers and vibrates >>> the device or not. So, I don't see a way to fingerprint devices using >>> this spec by taking advantage of "tiny imperfections during their >>> manufacturing" (of accelerometers and gyroscopes). Maybe it's in >>> conjunction with another API that that becomes revelant? (e.g., if you >>> were recording audio, I bet vibrating the phone with a little training >>> could allow you to characterize the surface it's on and possibly the >>> type of phone and if it's in a case) >>> >>> I think maybe drop the first fingerprinting concern (maybe I don't >>> understand it) but keep the second concern that it allows an external >>> observer in physical proximity to associate a device with a web >>> session by causing the device to vibrate using the API. (A possible >>> mitigation to allowing for highly unique vibration patterns would be >>> to make only simple vibrations possible.) >>> >>> If you've read this far, know that at some point we'll probably have >>> to deal with eavesdropping via mobile gyroscopes... so not >>> fingerprinting but full on identification of speaker information and >>> parsing speech: >>> >>> https://crypto.stanford.edu/gyrophone/files/gyromic.pdf >>> >>> On Tue, Feb 16, 2016 at 10:39 AM, Chaals McCathie Nevile >>> <chaals@yandex-team.ru> wrote: >>>> Hi, >>>> >>>> the Device API group are considering proposing a revision of the Vibration >>>> API, and one of the things they propose adding is a section on Security and >>>> Privacy. >>>> >>>> The current proposal is >>>> <https://github.com/anssiko/vibration/commit/48489c54e0b7ed80900e0906fa79803c8fa77069> >>>> >>>> The two things identified are that vibration can be picked up with e.g. >>>> motion sensors in the same device for fingerprinting, and that a vibrating >>>> device can be physicall observed externally. >>>> >>>> Wondering if anyone has further input. >>>> >>>> Cheers >>>> >>>> -- >>>> Charles McCathie Nevile - web standards - CTO Office, Yandex >>>> chaals@yandex-team.ru - - - Find more at http://yandex.com >>>> >>> >>> >>> >>> -- >>> Joseph Lorenzo Hall >>> Chief Technologist, Center for Democracy & Technology [https://www.cdt.org] >>> e: joe@cdt.org, p: 202.407.8825, pgp: https://josephhall.org/gpg-key >>> Fingerprint: 3CA2 8D7B 9F6D DBD3 4B10 1607 5F86 6987 40A9 A871 >>> >>> CDT's annual dinner, Tech Prom, is April 6, 2016! https://cdt.org/annual-dinner >>> >> >> David Singer >> Manager, Software Standards, Apple Inc. >> >> >> >
Received on Thursday, 18 February 2016 17:05:22 UTC