1. An apparatus comprising: processing circuitry; and memory circuitry including computer program code; the memory circuitry and the computer program code configured to, with the processing circuitry, cause the apparatus at least to perform: obtaining information from a plurality of sensors wherein the plurality of sensors are located on a plurality of vehicles; analysing the obtained information to determine whether at least one vehicle is exposed to risk; and after it is determined that at least one vehicle is exposed to risk, enabling one or more of the plurality of vehicles to activate a defensive mode of operation wherein the defensive mode of operation comprises causing notification of one or more other vehicles located so as to encounter a person or object that created the risk in order to facilitate monitoring of the person or object that created the risk by the one or more other vehicles.