The invention relates to plasticizer-containing polyvinylbutyrals that are characterized by containing as the plasticizer at least one dibenzoate of alkylene and polyalkylene glycols. In the apparatus, a calculation unit calculates an indicator value indicative of a likelihood that the first and second other vehicles are the same, where the indicator value is defined as a function of the speed of the first other vehicle detected by the detection unit and the speed of the second other vehicle indicated by the information received by the communication unit. The training data may include known benign URLs and known malicious URLs that are associated with a target authentic resource.