This book will provide an update for SSL and TLS: Theory and Practice, originally published in 2009, with its second edition published in 2011. In the past 11 years, many things have happened that are relevant to the SSL/TLS ecosystem. These protocols are fundamentally different from their predecessors and must be explained in detail. This book will explain all the details and technical subtleties of the new SSL, TLS and DTLS protocols, and how the current design tries to mitigate the attacks that have made press headlines in the past. Suitable for network security practitioners, software developers (web application developers), and students attending classes on network security and applied cryptography.