Security emerges as a central requirementas mobile ad hoc network applications are deployed. In this paper, we introduce the wormhole attack, a severe attack in ad hoc networks that is particularly challenging to defend against. Wormhole attacks enable an attacker with limited resources and no cryptographic material to wreak havoc on wireless networks. It is possible even if the attacker has not compromised any hosts and even if all communication provides authenticity and confidentiality. Wormhole attacks can form a serious threat in wireless networks.

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Ad Hoc Network Wormhole Attack Malicious Node