I don&#x27;t think shared hosting is very common with tor hidden services, especially sharing the same hidden service address. There are probably examples of it, but they&#x27;re rare.<p>A likely use of hidden-service-deanonymisation is finding the server that runs a drug market (silk road-style). Those are overwhelmingly likely to be on their own server.<p>Another commenter already linked to the tor project&#x27;s response, which suggests that this kind of website profiling attack is less accurate in the real world than their introduction would suggest.