The Internet of Things (Io T) – the emerging global interconnection of billions of ‘smart’ devices – will be collecting increasing amounts of private and sensitive data about our lives, and will require increasing degrees of reliability and trustworthiness in terms of the levels of assurance provided with respect to confidentiality, integrity and availability. This book examines these important security considerations for the Io T.Topics covered include a security survey of middleware for the Io T; privacy in the Io T; privacy and consumer Io T – a sensemaking perspective; a secure platform for smart cities and Io T; model – based security engineering for the Io T; federated identity and access management in Io T systems; the security of the MQTT protocol; securing communications among severely constrained, wireless embedded devices; lightweight cryptographic identity solutions for the Io T; and a reputation model for the Io T.