Learn from the mistakes of others in order to prevent being the victim of criminal fraud in IT. Real life example of how a medical center has been defrauded by a fake fraudster IT services company for many years.
Vet your vendors
Make sure you are getting an audit every few years. Only buy from channel partners that are actually part of the authorized distribution channel or you may never be listed as the legal owner of the product, and your warranty may not be honored by the manufacturer.