Re: [93attendees] Network experiment during the meeting

Tim Chown <tjc@ecs.soton.ac.uk> Tue, 14 July 2015 14:44 UTC

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From: Tim Chown <tjc@ecs.soton.ac.uk>
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Date: Tue, 14 Jul 2015 15:42:34 +0100
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Subject: Re: [93attendees] Network experiment during the meeting
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> On 14 Jul 2015, at 15:34, Jared Mauch <jared@puck.Nether.net>; wrote:
> 
> 	I find this study interesting because it's about data that people are
> sharing by default settings of their software and acceptance of EULA.
> 
> ….
> 
> 	If you haven't looked at the data your laptop leaks from running iTunes,
> mDNS/Bonjour, etc you may want to investigate it before joining an
> untrusted network.

Right, but (with IANAL disclaimer) there’s at least two aspects here:

a) gathering data generally isn’t the problem - it’s how you process and republish it, with user privacy in mind. Be that through specific MAC addresses, or names that might be embedded in mDNS names;

b) mDNS/DNS-SD is generally link-specific; a user may not expect their data to be discoverable beyond the link (whether it is meaningful or not). This is something we are discussing in the dnssd WG.

Tim