A Review on Study & Analysis of WSN, Attacks & its Applications

Computer Engineering

A collection of various sensor nodes is called as Wireless sensor network (WSN). These sensor nodes sense data from the surrounding and send it to its destination following a proper route. A sensor network has various applications to monitor physical phenomenon in military, agriculture and medical applications where it can be used to make human life better in many ways. There are many issues in WSN like security, energy efficiency and QoS etc. which needs attention of today’s research. There are several security attacks which affect the process of data dissemination. These security attacks spawn at various layers of Internet model which hampers the security of the network. In this paper, a comparative study of some detection and prevention methods of wormhole attack is presented. The various wormhole attack models and different modes of wormhole attack are also discussed in the paper. A wireless sensor network consists of sensors having autonomous wireless communication with the ability to sense their surrounding conditions and an ability to connect to the Internet through a base station. In most cases, sensors are spatially distributed and, hence, must have a low cost; for this reason, they have limited batteries, computational ability, and memory size. Sensors’ restrained ability to implement common security measures makes them vulnerable to various types of attacks. Moreover, their applications are sensitive to delay or packets corruption, e.g., forest fire detection, disaster relief operations, and lots of other applications. Therefore, improving security is compulsory. There are various types of attacks targeting different network layers. One type is a wormhole attack that is a harmful and easily deployed attack that targets the routing layer.

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