With the advent of Internet-of-Things (IoT), the communication has become very much ubiquitous with a faster response by supporting pervasive application demands. However, its resistivity towards adversary is still flawed with its existing security techniques. Owing to the novel nature of IoT, there have been various initiating attempts to introduce secure communication schemes for offering better security features to a diverse range of applications in IoT. This paper contributes to discuss existing research trend towards secure communication among the devices in IoT. The discussion present in the paper is anticipated to assists a snapshot of existing methods and approaches to research-based techniques in IoT.