Wireless Sensor Networks (WSNs) consists of tiny sensor nodes deployed in various geographic conditions to gather the information about the environment. The Intrusion Detection Architecture (IDA) in Wireless Sensor Network is used to detect various attacks occurring on sensor nodes of WSNs that are placed in various hostile environments. In the last few years, many innovative and efficient approaches have emerged in this area, and we mainly focus our attention on Trust based approaches of

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... ion Detection Architecture. In this article, our focal point of consideration is on Intrusion Detection Architecture for Wireless Sensor Networks. In addition, we present the security attacks and comparison of various Intrusion Detection Architectures.