I believe dealers need to look very hard at who is extracting data from their DMS systems. There are a lot of vendors out there today that will visit a dealer with the idea of sending zip code driven leads to the dealer and the payment for the lead is made after the vehicle sells. In theory, this makes perfect sense, except for one little hiccup. In order to match the lead and the vehicle sold the vendor requests access to the dealership's sales data in the…