Abstract: Various technologies enable the development of large scale sensor networks in a variety of fields. Sensor networks are placed in lot of secured decision making areas. The data collected from it must be trustworthy. In existing system the security mechanism for wireless sensor networks is not present accurate and so we cannot achieve secured trust models. There are several trust models available, but still there are various kinds of attacks on the network. Trust is a dynamic phenomenon which changes along with time and environment conditions. However, most existing trust models do not solve the trust dynamic problem to overcome that a (Leveraging Trustworthiness Topology) LTWT has been proposed which is more trustworthy and prevent the security more effectively.

Keywords: wireless sensor networks, leveraging, trustworthiness, trust models.