The dual goal of the "Handbook in Information Systems" is to provide a reference for the diversity of research in the field by scholars from many disciplines, as well as to stimulate new research. This volume, focusing on Information Assurance, Security and Privacy Services, consists of six sections. In the first part contributors discuss Program Security, Data Security and Authentication, while the second section covers Internet Scourges and Web Security. Parts two and three concentrate on Usable Security and Human-Centric Aspects, along with Security, Privacy and Access Control whereas the final sections of the book examine Economic Aspects of Security, and Threat Modeling, Intrusion and Response.