This is an instructional manual that covers everything from straightforward lock picking to quick entry techniques such as shimming, bumping, and bypassing.Material is offered in easy to follow lessons that allow even beginners to acquire the knowledge very quickly. Whether the student will be hired at some point to penetrate security or simply trying to harden his or her own defenses, this book is essential.This book reflects the changing landscape of tools and tactics which have emerged in recent years. It consists of 6 chapters that discuss topics such as the fundamentals of pin tumbler and wafer locks; the basics of picking, with emphasis on how to exploit weaknesses; tips for beginners on how to get very good and very fast in picking locks; advanced training; quick entry tricks about shimming, bumping, and bypassing; and pin tumblers in other configurations.This book is geared specifically toward penetration testers, security consultants, it security professionals, and hackers.