Vikas Dhawan, Gurjot Singh Gaba, Techniques for Enhancing Security in Wireless Sensor Networks, Asian Journal of Information Technology, Volume 15,Issue 18, 2016, Pages 3524-3530, ISSN 1682-3915, ajit.2016.3524.3530, (https://makhillpublications.co/view-article.php?doi=ajit.2016.3524.3530) Abstract: Security of transmitted data is a most important issue in any communication network. While concerning with security of data; attributes such as energy efficiency, low power consumption and less computation time must be taken care of. WSN strives to use those techniques for data security and data aggregation that works on low communication and computation cost because sensor nodes are resource limited. This study deals with performance comparison of different security schemes which claims to work on low computation and communication cost along with the discussion on different security techniques based on data aggregation concept. It has been observed from the analysis that security schemes based on data aggregation concepts are more suitable for WSN than others. Keywords: Data aggregation;data privacy;data security;cryptography;symmetric key;asymmetric key;key management;hash