With the recent climbing down of mixers and other privacy-enhancing services, by the authorities, the next big step to help mixers stay ahead of this is to set up a second-step verification of addresses that make deposits, this way, mixers can easily detect inflows from tagged address, this will help them to avoid being used by hackers such as the Lazarus group who have been responsible for the closing down of major mixers and other privacy-enhancing exchanges.
These privacy-enhancing platforms allow themselves via their operational model to be tools in the hands of those criminals, and for sure, it is very important for us to take some steps ahead, these address verification mixers could easily avoid getting into such troubles.