Walaa M. Elsayed is an assistant professor at the Faculty of Computers and Informatics, Damanhour University, Egypt. She graduated with a PhD degree from the Faculty of Computers and Information Sciences, Mansoura University. Walaa has actively participated in many research activities dealing with wireless sensor networks, mobile computing, data security, and a secure local network. She is interested extensively in wireless sensor networks. She has published in many international journals and presented at multiple conferences.