"Computer & Internet Security: A Hands-on Approach Second Edition" by Wenliang Du is a comprehensive textbook focused on the fundamental principles of Computer and Internet security. This book covers a wide range of topics including software security, hardware security, network security, web security, and cryptography. It takes a hands-on approach to learning, providing hands-on activities for readers to actively engage with the material. With a strong emphasis on practical applications, this textbook is suitable for undergraduate and graduate courses in the field of computer and internet security. The second edition was published in 2019 and includes illustrations to enhance the learning experience.