[LINK] How does LinkedIn know my contacts?

Roger Clarke Roger.Clarke at xamax.com.au
Mon Feb 11 14:33:38 AEDT 2013


At 14:19 +1100 11/2/13, Paul Brooks wrote:
>LinkedIn , as many social networks do, allows a user to upload their 
>entire email
>address book so that the social network site can identify other 
>members that the user
>might want to connect with.

How did I miss that one??

I guess 'cos I wrote about it so long ago - 9 yrs and 1 wk:
http://www.rogerclarke.com/DV/ContactPITs.html

_______________________________________________

>Those people you are being 'offered' have probably done this, and if 
>your email
>address was in their contact list or email address book, then 
>LinkedIn now knows that
>they have communicated with you at some stage, having matched one of 
>the addresses in
>their list with your registered email address.
>
>>  How is it doing this?  I have never given LinkedIn a direct link
>>  (that I know of) to my email contacts or used it anywhere except 
>>to login once
>>  or twice to TheConversation.edu.au for example.
>The thing about email contacts is a two-way relationship. You 
>haven't given LinkedIn
>your email contacts - but these people you have corresponded with 
>have given LinkedIn
>theirs, and your address was in there.
>
>Paul.
>_______________________________________________
>Link mailing list
>Link at mailman.anu.edu.au
>http://mailman.anu.edu.au/mailman/listinfo/link

-- 
Roger Clarke                                 http://www.rogerclarke.com/

Xamax Consultancy Pty Ltd      78 Sidaway St, Chapman ACT 2611 AUSTRALIA
                    Tel: +61 2 6288 1472, and 6288 6916
mailto:Roger.Clarke at xamax.com.au                http://www.xamax.com.au/

Visiting Professor in the Faculty of Law               University of NSW
Visiting Professor in Computer Science    Australian National University



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