Abstract: Self configuring nature of MANET exposes itself to variety of active and passive attacks. Black hole attack is an active attack which creates disruption in communication path. There are two types of black hole attack i.e. single black hole attack and collaborative black hole attack. We have considered single black hole attack. In this research work, single malicious node doesn’t allow the transmission of legitimate packets to the receiver and drop that packet. In this work in trust we present a detailed survey on various trust computing approaches and this approaches are used find the black hole attack in MANET.
Keywords: Network Security; MANET; Effects; Black hole attack; trust