Bestselling author, Bruce Schneier offers his expert guidance on achieving security on a network. Internationally recognized computer security expert, Bruce Schneier offers a practical, straightforward guide to achieving security throughout computer networks. Schneier uses his extensive field experience with his own clients to dispel the myths that often mislead IT managers as they try to build secure systems. This practical guide provides readers with a better understanding of why protecting information is harder in the digital world, what they need to know to protect digital information, how to assess business and corporate security needs, and much more. This book walks the reader through the real choices they have now for digital security and how to pick and choose the right one to meet their business needs. It explains what cryptography can and can't do in achieving digital security.