Wireless Sensor networks (WSN) is an emerging technology and have great potential to be employed in critical situations like battlefields and commercial applications such as building, traffic surveillance, habitat monitoring and smart homes and many more scenarios. One of the major challenges wireless sensor networks face today is security. While the deployment of sensor nodes in an unattended environment makes the networks vulnerable to a variety of potential attacks, the inherent power and memory limitations of sensor nodes makes conventional security solutions unfeasible. The sensing technology combined with processing power and wireless communication makes it profitable for being exploited in great quantity in future. The wireless communication technology also acquires various types of security threats. This paper discusses a wide variety of attacks in WSN and their classification mechanisms and different securities available to handle them including the challenges faced.

1. Adrian Perrig, John Stankovic, David Wagner, "Security in Wireless Sensor Networks" Communications of the ACM, Page53-57, year 2004
2. Al-Sakib Khan Pathan, Hyung-Woo Lee, Choong Seon Hong, "Security in Wireless Sensor Networks: Issues and Challenges", International conference on Advanced Computing Technologies, Page1043-1045, year 2006
3. Chris Karlof, David Wagner, "Secure Routing in Wireless Sensor Networks: Attacks and Countermeasures", AdHoc Networks (elsevier), Page: 299-302, year 2003
4. Ian F. Akykildiz, Weilian Su, Yogesh Sankarasubramaniam, and Erdal Cayirci, "A Survey on Sensor Networks", IEEE Communication Magazine, year 2002
5. John Paul Walters, Zhengqiang Liang, Weisong Shi, Vipin Chaudhary, "Wireless Sensor Network Security: A Survey", Security in Distributed, Grid and Pervasive Computing Yang Xiao (Eds), Page3-5, 10-15, year 2006
6. Pathan, A. S. K. ; Hyung-Woo Lee; Choong Seon Hong, "Security in wireless sensor networks: issues and challenges" Advanced Communication Technology (ICACT), Page(s):6, year 2006
7. Tahir Naeem, Kok-Keong Loo, Common Security Issues and Challenges in Wireless Sensor Networks and IEEE 802. 11 Wireless Mesh Networks, International Journal of Digital Content Technology and its Applications, Page 89-90 Volume 3, Number 1, year 2009
8. Undercoffer, J. , Avancha, S. , Joshi, A. and Pinkston, J. "Security for sensor networks". In Proceedings of the CADIP Research Symposium, University of Maryland, Baltimore County, USA, year 2002
9. Zia, T. ; Zomaya, A. , "Security Issues in Wireless Sensor Networks", Systems and Networks Communications (ICSNC) Page(s):40 – 40, year 2006
10. Xiangqian Chen, Kia Makki, Kang Yen, and Niki Pissinou, Sensor Network Security: A Survey, IEEE Communications Surveys & Tutorials, vol. 11, no. 2,page(s): 52-62, year 2009
11. Culler, D. E and Hong, W. , "Wireless Sensor Networks", Communication of the ACM, Vol. 47, No. 6, June 2004, pp. 30-33.
12. D. Djenouri, L. Khelladi, and N. Badache, "A Survey of Security Issues in Mobile ad hoc and Sensor Networks," IEEE Commun. Surveys Tutorials, vol. 7, pp. 2–28, year 2005.

Wireless Sensor Network Security Goal Security Attacks Defensive Mechanisms Challenges