Fully updated computer security essentials-quality approved by CompTIA Learn IT security fundamentals while getting complete coverage of the objectives for the latest release of CompTIA Security+ certification exam SY0-501. This thoroughly revised, full-color textbook discusses communication, infrastructure, operational security, attack prevention, disaster recovery, computer forensics, and much more. Written by a pair of highly respected security educators, Principles of Computer Security: CompTIA Security+® and Beyond, Fifth Edition (Exam SY0-501) will help you pass the exam and become a CompTIA certified computer security expert. Find out how to: -Ensure operational, organizational, and physical security -Use cryptography and public key infrastructures (PKIs) -Secure remote access, wireless networks, and virtual private networks (VPNs) -Authenticate users and lock down mobile devices -Harden network devices, operating systems, and applications -Prevent network attacks, such as denial of service, spoofing, hijacking, and password guessing -Combat viruses, worms, Trojan horses, and rootkits -Manage e-mail, instant messaging, and web security -Explore secure software development requirements -Implement disaster recovery and business continuity measures -Handle computer forensics and incident response -Understand legal, ethical, and privacy issues Online content includes: -Test engine that provides full-length practice exams and customized quizzes by chapter or exam objective -200 practice exam questions Each chapter includes: -Learning objectives -Real-world examples -Try This! and Cross Check exercises -Tech Tips, Notes, and Warnings -Exam Tips -End-of-chapter quizzes and lab projects.