The subject of this book, “A Study on Mitigation of Attacks from MANETS based on Authentication Mechanism,” is the real-time and labour-intensive deployment of wireless technologies that have been the subject of research. The use of MANET has resulted in a change in communication during the past few years. Both opportunities and problems have been presented by MANETs to both academic and industrial research. This book addresses numerous types of attacks with a thorough and cohesive framework. This book’s objective is to examine the advancements and present and upcoming difficulties in ensuring security for mobile ad hoc networks.