Wireless Sensor Networks (WSNs) are transitioning to real-world applications, where they face attacks already experienced by the Internet and wireless ad hoc networks. One such attack is that of Denial-Of-Service (DOS), which is believed will only become more prevalent as sensor networks become more pervasive and accessible. With the inherent resource limitations of WSN devices, they are particularly susceptible to the consumption and destruction of these scarce resources. This paper presents DOS attack taxonomy to identify the attacker, his capabilities, and the target of the attack, vulnerabilities used, and the end result. This paper surveys vulnerabilities in WSNs and give possible defenses.
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