Research Artcle Copyright (c) 2018 Internatonal Journal of Human Computer Interacton and Data Mining International Journal of Human Computer Interaction and Data Mining Volume 1, Issue 1&2 - 2018, Pg. No. 18-24 Peer Reviewed Journal The Detection and Avoidance of Sybil Attack Via Efcient Routing Procedures for Multiple Nodes in Wireless Sensor Network Prakash Dangi 1 , Prachi Goyal 2 Introduction Wireless Sensor Network (WSN) is a special kind of non- infrastructure network capable of wireless communicaton having large number of low-cost sensor nodes which are spatally distributed and used to monitor physical or environmental conditons with limited power and mult- functonal capability. A sensor node consists of four components: a sensing unit and a processing unit and a communicaton unit, and a power unit [1]. Wireless sensor networks being a setup less wireless network where nodes are self-determining and self- organizing. Peer-to- peer communicaton exists between nodes of a WSN. Mult- hopping can cause sensor node to Abstract A wireless sensor network (WSN) is an independent network. This network incorporates sensors which are autonomous in nature, spatally distributed and used to monitor physical or environmental conditons. The Energy consumpton is a major issue which takes place during transfer of data between nodes. The energy consumpton depends on how much nodes in the network and how much data transfer is happening between nodes. The communicaton among sensors is via wireless links. So there is always a risk from external threats. This infrastructure less nature of WSN makes it vulnerable to security risks and various atacks. There is an atack which causes many serious threats to the network and it is known as Sybil Atack. This is most popular atack in WSN in Sybil atack, atackers or false nodes use multple identtes to take control over the network and creates lots of misapprehension among nodes. They forge the identty of some trustworthy node present in the network and misbehave which leads to a large drop of data packets. There is always a confusion which node is good or which is false. It also efects the communicaton among the nodes present in the network. In this research, I will implement the LEACH routng protocol to detect and prevent Sybil atack in WSN for multple nodes. I will do this for 17, 32, 48 and 64 nodes. I will show the energy and efciency of this protocol. I will do this for small to big cluster rather than taking directly a big cluster of nodes. The usability and energy consumpton is questonable if we don’t have that much big requirement of cluster. The big the network the more energy consumpton happens. I will do Detecton and hope count for nodes. Detecton is done by distance and hop count between the nodes and preventon mechanism for Sybil atack will use encrypton technique. I have usedNS2 Simulaton tool for the implementaton of project. Keywords: LEACH Protocol, Wireless Sensor Network, Sybil Atack, Sensor Nodes, Encrypton, Energy Consumpton, Breadth First Search (BFS) 1 Research Scholar, Computer Science Dept. 2 Assistant Professor, Northern Insttute of Engineering Technical Campus Alwar, India. Corresponding Author: Prakash Dangi, Computer Science Dept. E-mail Id: prakash12dangi@gmail.com Orcid Id: htps://orcid.org/0000-0002-3331-0828 How to cite this artcle: Dangi P, Goyal P. The Detecton and Avoidance of Sybil Atack via efcient routng procedures for multple nodes in wireless sensor network. Int J Hum Comp Inter Data Min 2018; 1(1&2): 18-24.