(The training materials and materials for network security engineers of the Chinese Academy of Sciences hope to bring some help to the learning and improvement of security office workers and enthusiasts. Resource sharing, please give more advice, thank you!
Information Security Fundamentals.pdf
Cryptography.pdf
Network security system design.pdf
Identification.pdf
Hacker Attack and Prevention Technology (Part 1).pdf
Hacker Attack and Prevention Technology (Part 2).pdf)