The Tea app data breach has spiraled into online harassment, with leaked user photos reportedly used in a rating site and an unverified map. Experts say this wasn’t a hack—but a major security failure.

Its full name is Tea Dating Advice, and the central idea is a women-only app that gives those who are dating the ability to access background checks on men. This includes whether they have a criminal record (or if they're sex offenders), as well as reverse image searching to identify catfishing (assuming a false identity online).