We didn't have an automated process - we manually investigated and shut down accounts. On the supply side, we had poor fraud detection, also manual, almost enti

We didn't have an automated process - we manually investigated and shut down accounts. On the supply side, we had poor fraud detection, also manual, almost entirely one person. There was lots of room to automate things like this, but instead we had a robust internal Powershell library and numerous Slack bots. They embraced the "do things that don't scale" mantra a little too literally.