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Re:The Difficulty Of Private Contact Discovery by goatslacker on Friday January 03, 2014 @05:41PM (#7008745)
To the end user probably not but if the encryption is performed on the client and the client code is open sourced and you don't auto-update your application then you'll know exactly what is happening to your data when you let it access your contacts.
Re:The Difficulty Of Private Contact Discovery by Spearchucker on Friday January 03, 2014 @05:48PM (#7008795)
Not realistic. If it's open-sourced I can go examine the code for sure, but it's not a good use of my time (and I can actually read code, but even if someone had the time but can't read code?). I also have no way of knowing if anyone else has looked at the code at all, and if they have, whether they're skilled enough to determine that the code is kosher. Again, if I struggle with that, how on earth is a non-technical-minded person even going to begin?

The second question I haven't seen asked here yet, is why we need everything to be social to start with? My social needs are covered by Facebook and Twitter, and I don't install their apps on my phone either.

Given those two things, if an app (any app!) requires access to my contacts I don't install it. Period.

Re:The Difficulty Of Private Contact Discovery by goatslacker on Friday January 03, 2014 @06:46PM (#7009040)
You're right it isn't realistic, but it's the only way to fully know that the application is secure. Otherwise you're putting your trust in something/someone.