Wireless sensor network has emerged as a new information and data gathering paradigm based on the collaborative efforts of a large number of autonomous sensing devices. With small memories and processors, limited energy and tiny packets, sensor networks cannot afford traditional luxury security solutions; this limitation causes security threats. There are several important security challenges, including access control, message integrity and confidentiality, and trust solutions that require us to use a careful design of resource constraints for pursuing more enhanced security solutions for a wireless sensor network. In this paper, we present a new idea of persistent security solutions that support trust for general purpose Wireless Sensor Networks. Keywords Security, Trust, Wireless sensor network, Security in wireless sensor network