注意：第一次登入註冊時，請務必確實填寫姓名及E-mail，避免無法聯繫。

本課程介紹資訊與網路安全相關之議題，內容涵蓋了基本問題、原理、密碼學總覽、與網路安全技術。其次針對現實生活中的網路安全，討論目前已被實作且使用於網路安全的實用應用程式。

The purpose of the course is to provide a state-of-the-art text covering the basic issues and principles and surveying cryptographic and network security techniques. The latter part of the course deals with the real-world practice of network security: practical applications that have been implemented and are in use to provide network security.