W3C home > Mailing lists > Public > public-xg-webid@w3.org > October 2012

Re: WEbID Todos

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Fri, 05 Oct 2012 17:15:39 -0400
Message-ID: <506F4DFB.2010607@openlinksw.com>
To: public-xg-webid@w3.org
On 10/5/12 3:42 PM, Henry Story wrote:
> A good place to start would be to look at Harry Halpin's condensed FUD.
> http://lists.w3.org/Archives/Public/public-identity/2012Oct/0036.html

So nail this point since Harry's heavily vested in it, utterly 
incorrectly I might add re. WebID.

4.  Unlinkability

    Definition:  Unlinkability of two or more Items Of Interest (e.g.,
       subjects, messages, actions, ...) from an attacker's perspective
       means that within a particular set of information, the attacker
       cannot distinguish whether these IOIs are related or not (with a
       high enough degree of probability to be useful).


The above is also known as Entropy. Its the biggest challenge to privacy 
and everyone really needs to wake up and accept the existence of a 
thriving underground market for profile data nuggets. Thus, advocating 
any system that ships around mailto: scheme URIs in a certs. SAN is an 
utter contraction in terms. Our email addresses are the ultimate 
inadvertent "super keys" in today's entropy-friendly personal data 
underground market :-(

Thanks to logic, you can encumber the mailto: scheme URI "super key" by 
nesting in an ACL protected profile graph while (if you have to) placing 
a new mailto: or acct: URI in your SAN. Or put a fake email address and 
a real HTTP scheme URI in your SAN.  For the ultra paranoid, make a 
sub-property of owl:sameAs in your graph defined in an ontology that's 
ACL protected which then locks down inference based entailments etc..

Bottom line, the best solution I know of to the problem boils down to 
what many of us already understand about the combined prowess of: 
de-referencable URIs as an entity denotation mechanism, Linked Data 
based structured data representation, RDF data model (due to its 
explicit entity relationship semantics), and first-order logic as the 
overriding conceptual schema.



Kingsley Idehen	
Founder & CEO
OpenLink Software
Company Web: http://www.openlinksw.com
Personal Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca handle: @kidehen
Google+ Profile: https://plus.google.com/112399767740508618350/about
LinkedIn Profile: http://www.linkedin.com/in/kidehen

Received on Friday, 5 October 2012 21:16:05 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 19:39:56 UTC