MANETs are a type of wireless networks, typical choice for communication and data sharing. As the application field for MANETs widens so does the need for secure data transmission. Due to limitations posed by wireless and decentralized nature of MANETs the routing protocols proposed for MANETs are vulnerable to different types of attacks. Hence anonymous routing protocols are proposed that provides security and anonymity for secure communications. This book presents various anonymous routing protocols in MANETs and proposes one such protocol that provides security at desired level and trade-offs between various parameters.