Then "privacy fuckup" is a somewhat hyperbolic choice of phrase for this, isn't it? And it's misleading to mention private investigators and law enforcement when the friend list is only shown after the phone number has been verified.
The potential privacy compromise here is that people who might've not wanted the user to know that they had them in their synced-to-Facebook phonebook, or may have a secret profile connected to said phonebook, could be unwittingly exposed to the user. As your example of the friend with the hidden gay profile shows, that can have alarming results. I'd say that example's bad enough and worth addressing (even if the answer is just better messaging about how synced phonebooks can be used) and that the PI/law enforcement talk is just muddying the waters.
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Then "privacy fuckup" is a somewhat hyperbolic choice of phrase for this, isn't it? And it's misleading to mention private investigators and law enforcement when the friend list is only shown after the phone number has been verified.
The potential privacy compromise here is that people who might've not wanted the user to know that they had them in their synced-to-Facebook phonebook, or may have a secret profile connected to said phonebook, could be unwittingly exposed to the user. As your example of the friend with the hidden gay profile shows, that can have alarming results. I'd say that example's bad enough and worth addressing (even if the answer is just better messaging about how synced phonebooks can be used) and that the PI/law enforcement talk is just muddying the waters.