MWSNs are finding applicability in wide range of applications. Applications spread from day to day utilities to military and surveillance, where they may sense information about vehicular movements around border. Considering the importance of data being sent by these nodes, threat of compromising them has also increased. This paper aims to explore various types of attacks and tries to classify them based on some common parameter. Better understanding of various attacks, their style of

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... style of functioning and point of penetration can help researchers devise better preventive measures.