This book equips readers with the essential knowledge to innovate and improve network performance while ensuring security and safety. It covers foundational TCP/IP Internet network technologies and significant cyber-attack case studies. Additionally, it explains the core technologies behind Bitcoin, Ethereum, blockchains, smart contracts, hash functions, and encryption. The book also explores advanced concepts such as reinforcement learning, generative AI, federated learning, and digital twin technologies, offering new approaches to enhancing network security and blockchains through these cutting-edge methods.

Dr. Jong-Moon Chung was an assistant professor and faculty instructor in the Department of Electrical Engineering at the Pennsylvania State University in 1997. He has developed wireless network and security technologies for the US Department of Defense (DoD) and Ministry of National Defense (MND) of South Korea and has received many prestigious research and development (R&D) awards. In addition, he has developed many advanced network, security, blockchain, and AI technologies for the world-top companies including Samsung, LG, and Hyundai Motors. He has 119 international journal publications and holds over 140 patents. He has 6 courses currently opened in Coursera (course titles: Introduction to TCP/IP, Deep Learning for Business, IoT Wireless & Cloud Computing Emerging Technologies, Big Data Emerging Technologies, Smart Device & Mobile Emerging Technologies, AR & Video Streaming Services Emerging Technologies) which have over 2 million independent visitors/users and 430,000 enrolled students.