This is kind of the same problem as people who have no FB account, keep all of their personal life off FB, then they go to a work or social group gathering and some blithely ignorant/clueless person tags their photo.\
One of the biggest sources of spam I have is non-technically-oriented persons who I know either professionally or personally, that have my name and email address in their address book, who click "yes" to everything on their ios and android devices. Some of these particularly less sophisticated individuals have probably had two dozen unique apps from random developers copy the entire contents of their address book.
One of the biggest sources of spam I have is non-technically-oriented persons who I know either professionally or personally, that have my name and email address in their address book, who click "yes" to everything on their ios and android devices. Some of these particularly less sophisticated individuals have probably had two dozen unique apps from random developers copy the entire contents of their address book.