Re:Facebook will reveal who uploaded your contact info for a...
by gondo on Thursday February 07, 2019 @03:50AM
(#19103930)
i wouldn't call that voluntarily. they have been pressured to be more transparent for quite some time. if it was up to facebook, they would hide these kind of information even more.
It's possible that Facebook has been hacked or the above posters used Facebook connect to login to a third-party service that leaked the email addresses.