Book excerpt: Individual users and business organizations are shifting their data storage and utilizing cloud computing because of its easy availability and reduced costs. Although, this technology is creating an easy way to store, share, and access data, serious security concerns have been generated. Critical Research on Scalability and Security Issues in Virtual Cloud Environments is a critical scholarly resource that examines the concept of cloud computing and explores the various shortcomings of using the cloud. Featuring coverage on a broad range of topics such as cloud architecture for scalability, data vulnerability, and server virtualization management, this book is geared towards academicians, practitioners, and researchers seeking current research on developing effective security measures for cloud paradigm.