The insider's threats have challenged a security landscape for a long period of time. Even today there is a great concern about this sort of risk. This book gives detailed perspectives about some kind of new frontiers in that branch of defense. Indeed, the insider's threats are the challenge to business, community and well-being of all of us. In the practice, there is the huge need to talk about such a phenomenon as that kind of challenge would be successfully prevented, tackled and resolved in the investigation sense. In our opinion, this book could find its audience amongst the security professionals as well as a very broad readership that appreciates to cope with the new tendencies in the community.