This paper represents a review of privacy preserving techniques in wireless sensor network. Wireless sensor networks are not secure. To preserve privacy of wireless sensor network vari-ous techniques are discovered. A lot of work has been done to address challenges faced to pre-serve privacy of wireless sensor network. In this paper we represent a research on privacy pre-serving techniques used in location privacy, data privacy and network privacy. This paper should provide help for further research in privacy preservation in wireless sensor network.
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