Re: Facebook

[Adrien Kunysz <adrien () kunysz be>]

On Fri, May 20, 2011 at 03:12:38PM +0000, Dobbins, Roland wrote:
> On May 20, 2011, at 9:38 PM, Dave Aitel wrote:
>
> > You could even encrypt your picture uploads, chats, etc. 
>
> Why would Facebook permit this, once they figured it out, since their business model is predicated upon building a 
> social graph and then mining it?

Well, if Facebook is only interested in building a social graph they
don't really need access to the actual content. They only need to keep
track of who is talking with whome. And to capitalise on that, it
certainly helps to be able to read some of the messages but even if
50% of the people are using encryption, it probably doesn't matter
because at least some of your "friends" will indirectly betray your
interests in whatever product is being advertised. But there are
people on this list who are much more knowledgeable about traffic
analysis than I am.

As for the person who asked about GoogleTalk/Jabber/XMPP end-to-end
encryption, this is described in RFC3923 which is implemented in
several XMPP clients. XEP-0136 also describes server-side message
archiving, including an "off-the-record" mechanism although that one
won't protect you from a rogue server. I don't know specifically about
Pidgin and GoogleTalk.

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