This book presents a practical and managerial perspective on IS security in the modern digital enterprises. The topics include recent and relevant discussion * Management issues of policies, procedures, risks, controls, and security requirements *Practical review of security technologies such as cryptography, authentication, authorization, non-repudiation, and commercially available security packages (PKI, PGP, Kerberos, SSL, VPN) * Securing wireless and wired networks by using the security technologies * Securing enterprise applications, databases, and platforms by using the security technologies * Examination of security risks and circumventions associated with newer areas such as e-business/e-commerce, mobile applications, XML and Web Services, wireless communications, and application servers. * Audits and controls for continued secure operations * A methodology that puts all of the above into a procedure