Re: [perpass] privacy implications of UUIDs for IoT devices

Robin Wilton <wilton@isoc.org> Fri, 14 October 2016 16:28 UTC

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From: Robin Wilton <wilton@isoc.org>
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
Thread-Topic: [perpass] privacy implications of UUIDs for IoT devices
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Date: Fri, 14 Oct 2016 16:28:13 +0000
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Cc: "perpass@ietf.org" <perpass@ietf.org>, Paul Kyzivat <pkyzivat@alum.mit.edu>
Subject: Re: [perpass] privacy implications of UUIDs for IoT devices
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+1, plus a small further comment: Paul says "if this feature didn't exist, we'd have to invent an overt equivalent" as if that's a bad thing.

>From my perspective, that kind of design decision ought always to be an overt one - especially where, as Stephen implies, an occasional use-case (trouble-shooting) is used as the justification for a permanent default with privacy implications (linkable, semantically-loaded MAC address).

I recommend Michelle Dennedy's book, The Privacy Engineer's Manifesto, and Sarah Spiekermann's book on Value-based Design, for useful and informative guidance in this area.

Hope this is of use,
Robin

Robin Wilton

Technical Outreach Director - Identity and Privacy

On 14 Oct 2016, at 17:07, "Stephen Farrell" <stephen.farrell@cs.tcd.ie>; wrote:

> 
> 
> On 14/10/16 15:55, Paul Kyzivat wrote:
>> 
>> When looking at devices seen on WiFi the vendor ID is often displayed
>> and used to figure out which device is which, to correlate problem
>> symptoms with likely causes, and many other reasons.
> 
> How often? Compared to how often those are uselessly sent?
> (With the privacy downsides applying in all cases.)
> 
> I'm not saying that the "I need to debug stuff" arguments
> for access to information are baseless, but I do think we
> (techies) to better consider the privacy implications of
> things like that.
> 
> S.
> 
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