There are automatic measures, but like anything else they aren't 100% foolproof and if someone really wants to break our rules and put the work involved in it, they probably could do it. Either way, as has already been said, all that can be done is reporting with enough valid and viable evidence. Also, it's healthy to come to terms that it could possibly not be just one person. I don't know this case (and this isn't me asking to know more about it), but it could be similar to all the "AH bots" people constantly complain we do nothing about, when often they're actual real people dedicating time and making vast use of add-ons available to everyone.