There is no "Official" Blacklist, but this industry is pretty closely knit, and people will, and do, talk. If someone is legitimately acting unethically and an repeatedly engaging in behaviours that are detrimental to others then word will get around.

As for Site Inspectors being given access to Bank Logins? Site Inspections are done by 3rd Party Companies...they shouldn't even be privy to Bank Login Credentials.