A method, system and computer program product are provided for implementing 5G network-based information exchange across Internet of Things (IoT) enabled vehicular devices for amplified dynamic security. A 5G enabled amplified security manager is provided to implement enhanced amplified dynamic security for parked vehicles. The 5G enabled amplified security manager is provided with each enabled parked vehicle providing a 5G ad-hoc network. Information is dynamically collected and exchanged between the 5G enabled amplified security managers. When abnormal behavior is detected based on analysis of the collected data, the abnormal behavior information is sent on the 5G ad-hoc network triggering protective actions in co-ordination with all the devices in the network and provides security amplification.