The Internet of Things (''IoT'') refers to the ability of everyday objects to connect to the Internet and to send and receive data. It includes, for example, Internet-connected cameras that allow you to post pictures online with a single click home automation systems that turn on your front porch light when you leave work and bracelets that share with your friends how far you have biked or run during the day. This book discusses the emergence, perspectives, privacy and security issues of the IoTs.