An Efficient Dissemination and Dynamic Risk Management in Wireless Sensor Network

A sensor cloud consists of various heterogeneous wireless sensor networks (WSNs).These WSNs may have different owners and run a wide variety of user applications on demand in a wireless communication medium. Hence, they are susceptible to various security attacks. Thus, a need exists to formulate effective and efficient security measures that safeguard these Applications impacted from attack in the sensor cloud. However, analyzing the impact of different attacks and their cause-consequence relationship is a prerequisite before security measures can be either developed or deployed.We propose a risk assessment framework for WSNs in a sensor cloud that utilizes database. Code dissemination is the process of propagating a new program image or relevant commands to sensor nodes through wireless links, after a wireless sensor network (WSN) is deployed.