If it can be deciphered as to who has been defrauded and by how much then IMO the money belongs to his victims.

I am not sure how I feel about the seizing of his assets though. Maybe Australian law enforcement should be contacted and give them an opportunity to serve you with a seizure notice of Volpe's assets.

Out of curiosity, did you hack the account you are using? I don't think you are the original owner of the account.