Dr. Marimuthu Karuppiah is currently working as an Associate Professor in the School of Computing Science and Engineering(SCOPE) in VIT University, Vellore. Prior to joining VIT University, he held academic position of Senior lecturer in Department of Computer Science and Engineering, Syed Ammal Engineering College, Ramanathapuram, India from March 2005 to November 2008. He received his Ph.D. degree in Computer Science and Engineering from VIT University, Vellore, on August 2015 [July 2009 - August 2015]. He completed ME in Computer Science and Engineering from Anna University, Chennai, in the year 2005. He also received BE degree in Computer Science and Engineering from the Madurai Kamaraj University, Madurai, India, in 2003. His current research interests includes cryptography, wireless sensor network security, mobile ad hoc network security, vehicular ad hoc network security, remote user authentication using smart cards. He has authored over 50 papers in reputed international and conferences. He is a life member of Cryptology Research Society of India (CRSI) and Computer Society of India (CSI). He is also a professional member of IEEE and Association for Computing Machinery (ACM).