As computers and data systems continue to evolve, they expand into every facet of our personal and business lives. Never before has our society been so information and technology driven. Because computers, data communications, and data storage devices have become ubiquitous, few crimes or civil disputes do not involve them in some way. This book teaches law enforcement, system administrators, information technology security professionals, legal professionals, and students of computer forensics how to identify, collect, and maintain digital artifacts to preserve their reliability for admission as evidence. It has been updated to take into account changes in federal rules of evidence and case law that directly address digital evidence, as well as to expand upon portable device collection.