With the involvement of Mobile Adhoc Network (MANET) in many upcoming technologies and applications, there is an increasing concern about secure data transmission. Until the last decade, various solutions have evolved to circumvent this threat; however, the security issue is still a more significant threat. The problems studied during the review are usage of Complex Cryptographic Usage, Less Energy Efficient, Fewer studies towards Route Diversion Attack, and Less Emphasis towards Securing Beacon. An analytical method has been used to study these problems. This paper introduces a novel scheme that carries out dual operation viz. i) assessing the link legitimacy for detection of route diversion attack, and ii) costeffective countermeasures for the same attack. The key findings of proposed study is token generation process when associated with link legitimacy offers more routing security from various ranges of threats. The broader implication of this finding is that proposed system when characterized by lightweight encryption operation, it is capable of excelling better balance between data transmission and security performance unlike existing security solutions in MANET.