The book provides a gentle introduction and definition of the denotational-based abstract interpretation method. The book demonstrates how the above method of formal analysis can be used, not only to address the security of systems, but other more general and interesting properties related to the testing, mutating and semantic ambiguity resolution of protocols. The book presents three case studies, all related to current complex protocols and standards used in industry, particularly in the context of IoT and Industry 4.0.

The Internet of Things (IoT) - 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 IoT. Topics covered include a security survey of middleware for the IoT; privacy in the IoT; privacy and consumer IoT - a sensemaking perspective; a secure platform for smart cities and IoT; model - based security engineering for the IoT; federated identity and access management in IoT systems; the security of the MQTT protocol; securing communications among severely constrained, wireless embedded devices; lightweight cryptographic identity solutions for the IoT; and a reputation model for the IoT.