This book is beneficial for those researchers who are working on Network Security specially in Ad-Hoc Network Security. In Network security concern, there are various types of attacks one of them is Wormhole attack. Wormhole attack on Ad-Hoc Network is a serious issue in network security concern.There are so many techniques discovered to find such kind of attacks but each have pros and cons. In this technique, detection of Wormhole attack is done by the Energy Efficient Transmission Time Mechanism. Energy Efficient Transmission Time Mechanism leads to discover drastically changes results than other techniques to detect wormhole attacks. Researchers may adopt this technique for other Routing Protocol for Network security issues.