I think about this a lot when I think about immoral employers. How do you warn people or signal dangerous behavior to others without airing your dirty laundry?
It's sad that people and organizations can do things that are widely considered immoral until they're caught by others, and then they're only apologizing that they were caught.
If you think of the case of Wells Fargo, where a bank fired employees because they didn't do something almost illegal -- opening an account without the account holder's permission -- then often gave them a record such that they couldn't work in banking. They did it for years and eventually did get caught, fined and are very regulated now. But that they got away with it so long should give everyone pause.
What can you do? Look at people's credit ratings, job histories, etc. like a human being and know that sometimes people are taken advantage of. Don't hate all regulation because the bigger organization really does have a lot of advantages dealing with customers and employees.
It's sad that people and organizations can do things that are widely considered immoral until they're caught by others, and then they're only apologizing that they were caught.