No, and I don't necessarily think they need to/should. The situation has been resolved; EY (who is the only person I'm sure could actually do something about it) has better things to do; and the only potential solution I can think of that is relatively easily implemented is banning the accounts, which isn't really long term.

We've found one dummy account, and it would be good for the community to keep an eye out for other dummy accounts, but the problem doesn't seem serious enough to me to warrant expenditure of significant resources on it.