Chapter 1: Security Basics
01 The Need for Security
02 Three Key Elements of Security
03 Additional Security Elements
04 Information Leakage, Alteration, and Service Interference
05 What you need to ensure security
06 What needs to be secured
07 Personal Information
08 Specific personal information
[Column] Is security difficult?

Chapter 2 Basic Knowledge Required for Ensuring Security
01 Security Policy
02 Four Steps to Responding to a Security Incident
03 Certification and Authorization
04 Password
05 Hash
06 Hardening
07 Password
08 Biometric Authentication
09 One-time password
10 Two-factor authentication
11 Single Sign-On
12 Electronic Signatures and Their Application Examples
13 Certificates and Certification Authorities
14 Encrypted File System
15 Virus Tests
16 patches
17 Packet Filtering and Application Gateway
18 Security Operations Center (SOC)
19 Security Development Lifecycle (SDL)
20 Various logs
21 CSIRT
[Column] A multifaceted approach

Chapter 3 Devices for Detecting and Interpreting Attacks
01 Sandbox
02 Dynamic Analysis
03 Static Analysis
04 Forensics
05 Packet Capture
06 SIEM
07 Honeypots and Honeynets
[Column] Know Your Enemy

Chapter 4 Security Threats and Attack Methods
01 Attacker
02 Vulnerability
03 Malware
04 Plugin
05 Brute Force Attack
06 DoS/DDoS
07 Spam Mail
08 Standby Attack
09 Targeted Attack
10 Drive-by Downloads
11 Man-in-the-middle attacks
12 Buffer Overflow
13 SQL Injection
14 OS Command Injection
15 Cross-Site Scripting (XSS)
16 Cross-Site Request Forgery (CSRF)
17 Ransomware
[Column] Threats and Defenses

Chapter 5: Technologies for Ensuring Security
01 Secure OS
02 SELinux, TOMOYO Linux
03 Thin Client
04 Port Scan
05 Penetration Test
06 Common key encryption method
07 Public key cryptography
08 AES
09 TLS
10 Code Signing
[Column] Is Hacking a Crime? Offense and Defense Are Two Sides of the Same Thing

Chapter 6 Network Security
01 Firewall
02 Web Application Firewall
03 Proxy Server
04 IDS/IPS/UTM
05 VPN
06 IPsec
07 PPTP and SSTP
08 Other VPN Build Technologies
09 SSH
10 Telnet
[Column] The Core of Network Security

This book is aimed at those who want to learn more about security or current engineers. It explains the basics of what security is and how to think about it, while also specifically mentioning the structure of technology, such as security techniques and countermeasures.
Additionally, all items are presented on both sides with illustrations centered around important terms, allowing you to learn specialized content in a fun way.


The greatest strength of this book is that it explains the core security concepts one by one with illustrations (pictures), making it easy to understand the technical and practical aspects of security.
Through this content structure, we are confident that readers will acquire the fundamentals of information security and be able to effectively utilize that knowledge in a variety of situations.