A method and system for authorizing access to a product to limit suspected cross-region access is provided. The system receives from a customer device a product key that identifies a product and a product region. The system identifies a customer region indicating where the customer device is located. The system authorizes the customer's access to the product unless the product region does not match the customer region and the blocking of access is confirmed by applying a blocking rule so that access to the product is authorized even though a cross-region access is suspected.