This condensed guide is written to help you to get familiar with defensive and offensive tools, techniques and procedures of IT security. GIAC is one of the highly respected certification bodies in IT security area. Although candidates don't require a specific training for a GIAC certification, they are expected to demonstrate solid skills and knowledge which can be built in different ways. With this book and experience you will gather through completing the exercises within, you can pursue the certificate of your choice from GIAC, Mile2, EC-Council or other institutes.