Emmett Dulaney (Indianapolis, IN) is an Assistant Professor at Anderson University. He has written Sybex's CompTIA Security+ Study Guide, and co-authored CompTIA A+ Complete Deluxe Study Guide, CompTIA A+ Complete Study Guide, and CompTIA A+ Complete Review Guide. Chuck Easttom (Plano, TX), is CEO and Chief Trainer for CEC-Security, which specializes in IT security training and CISP and Security+ exam preparation. He has over 18 years in the IT industry, over 10 years teaching/training. He has authored 15 published books, including IT security. James Michael Stewart (Austin, TX), Security+, CISSP, CEH, CHFI, is a security expert, full-time writer, trainer, and researcher for Impact Online (www.impactonline.com), an independent courseware development company located in Austin. He has authored and contributed to over 75 books, including previous editions of the CompTIA Security+ Review Guide, and the CISSP Study Guide, both by Sybex. Michael provides IT instruction across the globe for various public and private organizations. Michael holds numerous IT and security certifications and much of his current work is focused on IT security and education. S. Russell Christy (Olive Branch, MS) is a Technical Trainer in Memphis, TN, delivering traditional and online classroom learning for adults, covering a wide variety of products. He specializes in Computer Maintenance and Network and Security; Microsoft Office applications; and Web and Print Design. For over 20 years he has deployed new desktops and operating systems, servers, network hardware and software, while simultaneously troubleshooting various hardware and software issues. Mr. Christy holds a Bachelor's Degree in Business Administration from The University of Memphis. He has additionally gained industry certifications in CompTIA A+, CompTIA Network+, CompTIA Security+, CompTIA Server+, MTA Windows Server Administration Fundamentals, Network Fundamentals, Security Fundamentals, and Windows OS Fundamentals, Microsoft Office Specialist 2013 Master, and Adobe Education Trainer.