Friends and family install Facebook mobile app, all of their contacts are sent to facebook which includes your phone number and email addresses. More data is gathered from other random sources online. Possibly even pictures from your college or mugshots.
Just imagine the data that was taken from the people who installed that LinkedIn "send all of your email through us" app.
Friends and family install Facebook mobile app, all of their contacts are sent to facebook which includes your phone number and email addresses. More data is gathered from other random sources online. Possibly even pictures from your college or mugshots.
Just imagine the data that was taken from the people who installed that LinkedIn "send all of your email through us" app.