Having had a domain stolen and having found the process of getting it back dicey and potentially ruinously expensive for anything other than very high value domains I'm looking for additional safeguards beyond passwords, 2 factor authentication and trusting registrars. Has anyone sought to trademark their domains specifically for legal protection? I think at least one registrar offers some sort of subscription legal plan service with fees for filing trademark claims on your domains. Does it work? Is it worth it? If so, what is the best way to go about registering a mark for a domain?