Few Information Technology skills are in more demand these days than those related to security and few qualifications in this field are more respected than CompTIA.s Security+ certification. Security+ Essentials is an eBook designed to provide the knowledge necessary to pass the CompTIA Security+ exam. Topics covered include I.T. infrastructure security access control cryptography intrusion detection firewall configuration threat types public key infrastructure and more. If you are planning to study for the Security+ exam or simply want to learn more about I.T. Security in general Security+ Essentials is an ideal source of information.