The internet has gone from an internet of people, to an Internet of Things. This has brought forth strong levels of complexity in handling interoperability that involves the integrating of WSNs into IoT. This book offers insights on the evolution, usage, challenges, and proposed countermeasures associated with the integration. Focusing on the integration of WSNs into IoT and shedding further light on the subtitles of such integration, this book aims to highlight the encountered problems and provide suitable solutions. It throws light on various types of threats that can attack both WSNs and IoT along with the recent approaches to counter them. Designed to be the first reference choice at research and development centers, academic institutions, university libraries, and any institutions interested in integration of WSNs into IoT. UG/PG students, PhD Scholars, industry technologists, young entrepreneurs and researchers working in the field of security and privacy in IoT are the primary audience of this book.