This book delivers an introduction to the topic of Digital Forensics, covering theoretical, practical and legal aspects with reference of Canada and US legal system. The first part of the book focuses on the history of digital forensics as a discipline and discusses the mannerisms and requirements needed to become a forensic analyst. The middle portion of the book constitutes a general guide to a digital forensic investigation, mostly focusing on computers. It finishes with a discussion of the legal aspects of digital forensics as well as some other observations for managers or other interested parties. This book provides details how to conduct digital investigations in both criminal and civil contexts, and how to locate and utilize digital evidence on computers, networks, and embedded systems. Specifically, the Investigative discovery section of the book provides expert guidance in the three main areas of practice: Forensic Analysis, Electronic Discovery and Interception Investigation. Digital evidence is type of evidence that is stored on or transmitted by computers which can play a major role in a wide range of crimes, including homicide, rape, abduction, child abuse, solicitation of minors, child pornography, stalking, harassment, fraud, theft, drug trafficking, computer intrusions, espionage, and terrorism. Nevertheless an aggregate number of criminals are using computers and computer networks, few investigators are familiar in the evidentiary, technical, and legal issues related to digital evidence. As a result, digital evidence is often overlooked, collected incorrectly, and analyzed ineffectively. The aim of this book is to educate students and professionals and personnel of investigation agencies in the law enforcement, forensic science, computer security, and legal communities about digital evidence and computer crime. This book offers a comprehensive and integrative introduction of e-discovery evidence of digital forensics, with reference to abundant case laws of Canada and USA. It helps to investigate and detection of cybercrime and the role of digital information, and the wider role of technology as a facilitator for social relationships between deviants and criminals.