Mobile Adhoc Network (MANET) is claimed to be an integral part of all futuristic network and communication system e.g. cloud, reconfigurable network, Internet-of-Things (IoT), interdomain routing, etc. However, the security problems of MANET is not yet been mitigated irrespective of archives of security approaches and solution. For a MANET system to be integrated with upcoming technologies it is required that their routing system should offer higher level of resistance against all potential threats as well as they should also offer a better flexibility to tailor the security scheme based on demand of the environment, where the mobile nodes are operating. It is also seen that Artificial Intelligence is another big boon which is currently being proliferating at faster speed and there are some segment of research where it is also claimed to contribute towards security system in MANET. Therefore, this paper offers insights to the current state of security system using conventional as well as using Artificial Intelligence to explore about its research gap.