In an era where telecommunication networks form the backbone of our digital society, this book provides a definitive resource for understanding and implementing robust security measures across various generations of telecom infrastructure. From the fundamental security challenges of 1G networks to the complex threat landscape of 5G, this book delivers a thorough examination of vulnerabilities, attack vectors, and defense strategies that every telecom professional must understand.

This book systematically covers the entire mobile security spectrum. Drawing on real-world implementations and architectures, this guide bridges the gap between theoretical security concepts and practical deployment. Each chapter combines technical depth with actionable insights, featuring designs that demonstrate how service providers have successfully implemented defense-in-depth approaches across 3G, 4G, IMS, virtualized environments, RAN, transport, multi-access edge computing (MEC) infrastructures, and other telecom components.

Whether you are a security specialist seeking telecom-specific expertise, an engineer responsible for secure network design, an executive making strategic security investments or a student preparing for a career in telecommunications, this book provides the knowledge you need to protect critical telecom infrastructure. The included frameworks, checklists, and reference architectures serve as practical tools that can be applied to strengthen your organization's security posture in today's rapidly evolving threat landscape.

WHAT YOU WILL LEARN
● Understand various telecommunication architectures across all telecom generations.
● Identify and mitigate security threats and vulnerabilities across all telecom generations.
● Implement defense strategies for critical telecommunications network infrastructure.
● Analyze and respond to sophisticated attacks targeting telecommunications assets.
● Transform security concepts into solutions using field-tested architectural patterns.
● Develop comprehensive security governance frameworks for telecom environments.
● Implement global security standards (3GPP, ETSI) for mobile network compliance.

WHO THIS BOOK IS FOR
This book is intended for security professionals, telecom engineers, executives, and students looking to understand the security landscape of modern telecommunications networks. It is ideal for those interested in converged telecom ecosystems and who have a foundational understanding of telecommunication architecture, telecom nomenclature, general networking principles, and basic cybersecurity concepts.

Tiju Johnson is a seasoned senior security architect with over twenty years of experience in the security field, with nearly a decade in securing telecommunications networks. He has specialized in designing and implementing robust security frameworks for both enterprise and service provider networks and has delivered solutions that address the most complex security challenges while ensuring alignment with industry standards and regulatory requirements. His strength lies in transforming high-level security strategies into actionable implementations that enhance organizational resilience against evolving cyber threats. This book represents the culmination of his hands-on experience and industry insights gained across a decade of securing telecom networks across the globe. He is currently working as a senior security solutions architect and has been part of white paper contributions with 5G Americas.

1. Global Security Standards and Evolution of Security in Mobility
2. Generations of Mobile Network and 1G
3. 2G and Enabled Services
4. IP Multimedia Subsystem
5. Third Generation of Mobile Networks
6. 4G Mobile Networks
7. 5G Mobile Networks
8. Private 5G
9. Network Slicing and Related Security
10. RAN and Transport Security
11. Container Adoption in 5G Networks
12. Perimeter and Edge Security
13. Identity and Access Management
14. Security Monitoring
15. Network Security Testing
16. Beyond 5G
17. Securing Future Networks