Thank you for viewing. We appreciate it if you read the description to the end. … … … … … … … … … ✅ Instant purchase OK! ✅ Discount for purchases of 5 or more items! … … … … … … … … … ／ #bnn Magazines/Books List is here! ＼ …　…　…　…　…　…　…　…　… ⭐️Product Description⭐️ Table of Contents Chapter 1: Information Security and Cybersecurity Chapter 2: Fundamentals of Internet Technology Chapter 3: Threats to Security Chapter 4: Cryptography, Authentication Technology, PKI Chapter 5: Communication Control and Cyberattack Countermeasures Chapter 6: Web System Security Chapter 7: Email System Security Chapter 8: DNS System Security Chapter 9: Secure Protocols Chapter 10: System Security Chapter 11: Information Security Management Chapter 12: Example Exercise Answers and Explanations Author Introduction Hitoshi Nagashima ⭐️Product Condition⭐️ This is a used item. …　…　…　…　…　…　…　…　… ⭐Accessories⭐ Everything shown in the product photos is included. Please take a close look at the photos before purchasing. …　…　…　…　…　…　…　…　… ⭐ #bnn Product List is here ⭐ …　…　…　…　…　…　…　…　… 【From Payment to Shipping】 We will ship within 2-3 days after payment is completed.