Wireless Sensors Networks Security

1975 Words8 Pages
1. Introduction

Developments in micro electro mechanical systems (MEMS) and wireless networks are opening a new domain in networking history. Sensors; often called "smart dust" are low cost small tiny devices with limited coverage, low power, smaller memory sizes and low bandwidth, will play a key role in collecting and disseminating data from the fields where ordinary networks are unreachable for various environmental and strategical reasons.

There have been significant contributions to overcome many weaknesses in sensor networks like coverage problems, lack in power and making best use of limited network bandwidth, however; work in sensor network security is still in its infancy stage. This paper is an effort to introduce the security issues in wireless sensor networks, highlight the current research efforts, and to determine the future directions to solve the unresolved issues.

The remainder of this paper is organised in the following way. Section 2 provides a brief overview of wireless sensor networks, their evolution, major research initiatives and future applications. In section 3, security issues and challenges are discussed. Section 4 highlights the related work in sensor networks. Section 5 concludes the paper by posing some questions and future directions.

2. An Overview

Sensor networks are emerging technologies currently being deployed in seismic monitoring, wild life studies, manufacturing and performance monitoring. These sensor nodes are densely deployed in a predetermined geographical area to self-organise into ad hoc wireless networks to gather and aggregate data [8].

The ad hoc nature of sensor networks poses unique challenges with their security and reliability. Resource constrained senso...

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[8] Ning Hu, Randy K. Smith and Phillip G. Bradford "Security for Fixed Sensor Networks" ACMSE2004

[9] S. Kumar and D. Shephered, "SenseIT: Sensor information technology for the warfighter," in Proceeding of 4th International Conference on Information Fusion, 2001

[10] Mike Chen, Weidong Cui, Victor Wen, and Alec Woo, "Security and Deployment Issues in a Sensor Network", 2000, UC Berkeley

[11] Bruce Schneier, August 2004 "Olympic Security " online. [Available]

http://smh.com.au/articles/2004/08/25/1093246605489.html [Accessed 28 August 2004]

[12] "10 Emerging Technologies That Will Change the World" online. [Available] http://et.its.psu.edu/public/news/tenETs2004.pdf [Accessed 28 August 2004]
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