Updated for the new CompTIA Security+ exam, this book focuses on the latest topics and technologies in the ever-evolving field of IT security and offers you the inside scoop on a variety of scenarios that you can expect to encounter on the job—as well as step-by-step guidance for tackling these tasks. Particular emphasis is placed on the various aspects of a security administrator’s role, including designing a secure network environment, creating and implementing standard security policies and practices, identifying insecure systems in the current environment, and more.