If you're using the popular social/money-transfer phone app Venmo check your privacy settings!! It seems that the default is that every transaction you make is public! It is difficult for me to express just how broken this is. In case you're having trouble grasping the implications, just go to PUBLIC BY DEFAULT - Venmo Stories of 2017. There you will find profiles of five unsuspecting Venmo users -- one of them is a cannabis retailer -- whose transactions were among the over two hundred thousand exposed to public view during 2017.
The site is a project of Mozilla Media Fellow Hang Do Thi Duc. She has some other interesting things on her site.
It's worth noting that Venmo is owned by PayPal, and that according to a PayPal spokesperson quoted in this article on Gizmodo the public-by-default nature of person-to-person transfers (person-to-business transactions are private) is apparently a deliberate feature, not a bug.
“Venmo was designed for sharing experiences with your friends in today’s social world, and the newsfeed has always been a big part of this,” a company spokesperson told Gizmodo, asserting that the “safety and privacy” of its users is a “top priority.”
"We make it default because it's fun to share [information] with friends in the social world," a Venmo representative told CNET Friday. "[We've seen that] people open up Venmo to see what their family and friends are up to."
Because it's fun. Kind of puts it in the same category as other "fun" things like cocaine, binge drinking, and unprotected sex, doesn't it?