This comprehensive resource provides a thorough introduction to the security risks, attack vectors and vulnerabilities an Internet of things IoT product and its network can face at different phases of its lifecycle. The risks at each stage of the development and operations DevOps lifecycle of an IoT product are analyzed. Examples of recent, relevant security threats faced by the industry are discussed and why the security breach happened, how it was resolved, and what could have been done to avoid them will be explained. Readers will learn the best practices to secure their IoT products, and networks in a holistic way.