We design/implement a transparent deployment solution for 4G/5G MEC (Multi-access Edge Computing) platforms. The solution is standard-compliantdoes not require any changes on 4G/5G base stationcore network. Its MEC deployment is just plug-and-play. It contains five major components to gracefully interact with cellular protocols : ARP proxy, MEC packet gateway, GTP states tracking module,

We develop a vulnerability detection module to identify three important security vulnerabilities in the IMS system that supports 4G/5G multimedia services. We have validated them in 4 carriers from TaiwanU.S. using smartphones from 7 brands,shown that they can be exploited to launch a stealthy call DoS attack, a social engineering attack with ghost calls,a call ID spoofing attack. Moreover, attackers can detect attackable users using an AI technique with only the users＇ phone numbers. We finally propose solutionsdevelop an AI-based technique of call ID spoofing detection.