There was a time I worked as a third party for one of the 10 most accessed websites in my country. I got assigned to a project that has been maintained by another third party for 10+ years with no oversight. I have many stories from there but today's is that this company had very strict access control to the production database.

Third parties couldn't access the database directly. All fine and good, except for the fact that we were expected to setup some stuff in the database pretty much every week. The dude who kept this project running for the previous decade, unable to get proper credentials to do his job, instead created an input box in some system that allowed him to run any sql code.

You can already guess the rest of the story, right? For security reasons we had to do things in the least secure way imaginable. Eventually, wheres were forgotten.