Updated edition was written to help IT managers and professional asset protection to ensure the protection and availability of digital information and information systems that relate to assets, and contains major updates and 3 new chapters. Bridging the gap between information security, information systems security and information warfare, review why the organization needs to take information security seriously, and discuss, legal business, and technical knowledge needed to secure this very important government and business assets. The main topics include: The role of security guard companies; cybercrime Company; Electronic commerce and the global market, Cryptography, International standards, policies and security measures. "The view refresh clear & wide Information Assurance ... this book not only explains what the problem is, it also provides clear information on how to overcome problems that have been proposed."