v Reviewers Shane Archibald, M.S., Cybersecurity Instructor, Gwinnet Technical College, Lawrenceville, Georgia Mark Bayley, Adjunct Professor and Penetration Tester, Metropolitan Community College of Kansas City, Kansas City, Missouri Dr. Adam Beatty, Associate Professor of Information Technology, Washington State Community College (WSCC), WSCC/Marietta, Ohio Dr. Scott Bell, Assistant Professor of Computer Science, Northwest Missouri State University, Maryville, Missouri Bryan Bennett, Assistant Professor of Network and Systems Administration, Kirkwood Community College, Cedar Rapids, Iowa Constance Boahn, Engineering and Computer Information Technologies Department Chair, Central Carolina Community College, Sanford, North Carolina Donald D. Casper, Computer Networking Instructor, College of Eastern Idaho, Idaho Falls, Idaho Dr. Tingting Chen, Associate Professor of Computer Science, California State Polytechnic University at Pomona, Pomona, California Jenny Dawkins, Professor, Department of Computer & Information Technology, West Virginia University at Parkersburg, Parkersburg, West Virginia Kim Doane, Technology Professor, Mott Community College, Flint, Michigan Gayle E. Francis, MBA, Instructor, Computer Science and Technology, Tarrant County College District, Northeast Campus, Hurst, Texas Dr. Bill Hammerschlag, Computer Information Technology Faculty, Dallas College, Dallas, Texas Amy Hertel, Professor, Texas State Technical College, Marshall, Texas Ryan Hill, Professor, Computer Science Department, Houston Community College, Houston, Texas Dr. Shweta Jain, Associate Professor, Mathematics & Computer Science Department, CUNY John Jay College of Criminal Justice, New York, New York Timothy Jansen, Adjunct Professor for NET Courses, Information Technology Department, Harper College, Palatine, Illinois Junhua (Jason) Jia, PhD, Professor (Tenured), Computer Science and Information Technology Department, Sinclair Community College, Dayton, Ohio Kyle Jones, Chair and Associate Professor of Computer Science and Information Technology, Sinclair College, Dayton, Ohio Jon Juarez, Regents Professor/Department Chair for Computer and Information Technology, Dona Ana Community College, Las Cruces, New Mexico Kees Leune, PhD, CISO and Assistant Professor, Mathematics and Computer Science, Adelphi University, Garden City, New York Andrew Lutz, MS, Associate Professor and Information Technology Chair, Johnson County Community College, Overland Park, Kansas Dr. Rick L. Massengale Sr., Associate VP Sponsored Programs and University Initiatives, Computer Science Professor, North Arkansas College, Harrison, Arkansas Arden Meyer, Adjunct Instructor, Cyber Security, Des Moines Area Community College, Ankeny, Iowa Robert C. Nelson II, Information Technology Program Coordinator, Blinn College, Bryan, Texas Thalya Nero, Education Manager/Adjunct Faculty, AZStRUT/South Mountain Community College, Phoenix, Arizona Alicia Pearlman, Adjunct Faculty, Computer Science Department, Schoolcraft College, Livonia, Michigan Zhengrui Qin, Assistant Professor, Computer Science Department, Northwest Missouri State University, Maryville, Missouri Dennis Roebuck, Computer Science and Information Technology Faculty, Delta College, University Center, Michigan Kenneth Schaffer, IT Security Instructor, Southeast Technical College, Sioux Falls, South Dakota Michael Sletten, Adjunct Professor for NET Courses, Information Technology Department, Harper College, Palatine, Illinois Michael Vest, Networking Technology Instructor, Ozarks Technical Community College, Springfield, Missouri Minhua Wang, Cybersecurity B.S. Program Coordinator, SUNY Canton, Canton, New York Goodheart-Willcox Publisher would like to thank the following individuals for their honest and valuable input in the development of Security Essentials.