Cloud computing is impractical for certain IoT applications, thereby succeeded by the fog computing. FC is a decentralized computing substructure with regard to data sources and cloud. It improvises cloud computing along with implicit facilities, to network’s edge and makes the cloud an emerging tool for efficient data processing. The main goal of the fog computing is to improvise efficiency and lower the data amount transferred.

Information preparation happens in smart device, which is then transmitted to sources for preparing and retransmission, along these lines lowering the data transmission payload for the cloud. The bidirectional communication affects performance and security of the resources. Every time data is sent to the cloud and awaiting response takes a lot of time. By ensuring the fog nodes with the analogous controls, policies, and techniques over various sections of networks, security is managed well [56].

The supreme accomplishment with edge computing is refining activities. Chiefly, there are two classes of security in edge computing: One is the security in edge computing that is improved than any other technologies because data does not move across the network. Next is security that required in edge computing is comparatively higher because the edge devices are themselves are more vulnerable to security faults [57].