Interesting.  A couple of possible issues (and of course I am speculating here):

1. Using OAuth for authentication (does LinkedIn support OIDC?)
2. Not asking for the minimum information needed (either by omission or by 
intent)

I am really speculating now, but wonder if Slideshare didn’t actually want 
anything from LinkedIn, they just wanted to authenticate you. It may be that 
LinkedIn didn’t provide a scope and LinkedIn defaults this to “everything”. If 
true, this would seem to be a bad practice since it has the unintended 
consequence of defaulting to all scopes.

The whole process failed to convert you into a user since your experience was 
bad and asked for inappropriate access.  

It would be interesting to find out more of the facts around this. 

Phil

@independentid
www.independentid.com
[email protected]

> On Jul 22, 2015, at 9:49 AM, Kathleen Moriarty 
> <[email protected]> wrote:
> 
> Hey Barry,
> 
> From my observations with Facebook, it now has options added for you to 
> select what resources from Facebook will get shared when authorizing access 
> to other applications.  You can click on each of the possibilities and strip 
> it down.  It appears to me that Facebook is managing that, so in your case, I 
> *think* (and am open to be corrected) that LinkedIn needs to do something 
> similar.  Without those options, I also cancel out and just don't use the 
> other app.  
> 
> Thanks,
> Kathleen
> 
> On Wed, Jul 22, 2015 at 3:44 AM, Barry Leiba <[email protected] 
> <mailto:[email protected]>> wrote:
> Yesterday, someone sent me a link to some presentation slides that
> he'd posted to SlideShare.  I looked at them, and wanted to download
> them as a PDF.  In order to let me do that, SlideShare wants me to log
> in.  It gives me the options to log in via LinkedIn or Facebook.  As
> I'm one of the three people in the world without a Facebook account, I
> clicked "LinkedIn".  That got me an OAuth authorization screen, image
> attached.
> 
> Now, I don't know if this is SlideShare's fault for asking for too
> much, or LinkedIn's fault for not providing enough granularity for
> requests, but just LOOK at that list of what I'd be giving SlideShare
> access to.  The first few make sense: read my profile (the whole thing
> or pieces of it, including contact information).  But... access to my
> connections?  I'm not sure they'd like my exposing their identities to
> SlideShare.  Access to my private messages?  EDIT MY PROFILE?  Srsly?
> 
> Of course, this isn't the fault of the OAuth protocol, really (though
> one might argue that there's not enough guidance provided).  But,
> really, with implementations like this, I have to wonder what they're
> thinking.
> 
> I clicked "Cancel", of course, and asked the slide creator to send me a PDF.
> 
> Barry
> 
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> 
> 
> 
> -- 
> 
> Best regards,
> Kathleen
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