A data expert by the name of Hang Do Thi Duc recently exposed a problem with Venmo’s privacy settings, they’re public by default.

And, if you look to your other side, you’ll see the devil in the form of a bot that tweets the names and faces of Venmo users who are referencing drugs and sex in their transactions.

Joel Guerra, the human behind the bot, wanted to “demonstrate how much data Venmo was making publicly available with their open API and their public by default settings and encourage people to consider their privacy settings,” according to a report from Motherboard.

And, in the spirit of fairness, the method he chose to demonstrate his point seems like it would be an effective one.

Where Hang’s work, which we wrote about earlier this week, uses anonymized data and clever visualizations to show how a person’s public data could be exploited, Guerra sort of rubs people’s face in it like a dog who’s pissed on the rug.

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