0. Introduction to Mobile Network Security

• What is mobile network security?
• Why mobile networks are unique
• IT vs. telecom security
• Threat landscape overview
• Who this guide is for (CISOs, engineers, auditors)
• Telecom Security in Digital age

1. The Building Blocks of Mobile Networks

• Core & Access Networks
  • Telecom Vendors
  • Core Network
  • Radio Access Network (RAN)
  • Transmission & Connectivity
  • Private vs Public Mobile Networks
• Key Network Components
  • Switching & Routing
  • Security & Access Control
  • Edge Computing in 5G
  • Testbeds and Labs for Telco
• Generations of Mobile Networks
  • 2G
  • 3G
  • IMS
  • 4G
  • 5G
    • 5G Core
    • 5G Security
    • Wifi 6 vs 5G
  • eSIM
    • eSIM Definitions and Guide
    • eSIM Security & Threats
  • NTN

2. An Overview of Mobile Network Protocols

• What are Mobile Network Security Protocols
• SS7 / SIGTRAN
  • SS7
  • SIGTRAN
• DIAMETER
  • Diameter Protocol and it's Vulnerabilities
• GTP (GPRS Tunneling Protocol)
  • GTP-C
  • GTP-U
  • Common Attacks and Ways to Secure It
  • Weak GPRS encryption algorithms should be phased out
• Interconnect & Roaming
  • VoLTE
  • SIP in IMS
  • HTTP/2 in 5G Networks
  • Telecom Interconnection Security
• Cross-Protocol Attack Paths
• Protocol Stack Diagrams (4G/5G)
• Protocol Misuse Case Studies

3. Core Components and Functions of Mobile Networks

• Key Mobile Network Equipment and Functions
• Subscriber and User Management
  • UDM
  • HLR
  • HSS
  • IMSI
  • MSISDN
• Radio Access Network (RAN)
  • Functions of RAN
  • 5G New Radio (NR)
  • Traditional RAN vs Open RAN
• Interconnection Between Networks
  • GRX
  • IPX
• Network Slicing in 5G
  • Security Challenges of Network Slicing
• Network Virtualization and Automation
  • NFV
  • SDN
  • Kubernetes
• Key Identity & Subscriber Data
  • Global Titles (GT) & GT Leasing
  • How Penetration testers should approach GT Leasing
• Authentication & Key Agreement Protocols
  • EAP-AKA
  • EAP-AKA’
  • SUPI/SUCI
• Hardware Security Modules (HSMs) in Core

4. Understanding Security in Mobile Networks

• Common Vulnerabilities in Mobile Networks
  • SS7, Diameter, GTP, IMS & 5G Security Risks
  • Network Slicing Security Risks
• Telecom Fraud & Cyber Threats
  • DDoS Attacks
  • Telecom Fraud
  • SIM Cloning
  • Phishing
  • Smishing
  • Data tunneling
• Security Auditing & Testing
  • Penetration Testing for SS7, Diameter & GTP
  • Security Tools
    • Wireshark
    • Protorisk
    • QCSuper
    • QCSuper v2
    • SigFW ( Github repo / PoC firewall for signalling)
• Common Misconfigurations
• Incident Response Process in Telecom
• Telecom Security Policy Examples

5. Essential Security Solutions for Mobile Networks

• Defensive Tools
  • Firewalls for SS7, DIAMETER, and GTP
  • SMS-Router (SS7/SIGTRAN)
  • GLR (SS7/SIGTRAN)
  • IDS
  • Encryption Strategies for Signaling and User Data
  • STIR/SHAKEN and MAN
• Proactive Measures
  • Vulnerability Intelligence
  • Threat Intelligence
  • Attack Surface Management
  • Penetration Testing
  • T-MSSP
• Regulatory Compliance and Best Practices
  • ISO 27001 Certification
  • GSMA Compliance
  • Privacy Regulations (e.g., GDPR, CCPA)
  • User Privacy
  • CSA Licence
  • The Impact of Regulatory Compliance on Telecom
  • Telecom Regulators
  • GSMA FS
    • FS 11
    • FS 19
    • FS 20
    • FS 31
    • FS 36
• Future-Proofing Security
  • AI-Driven Threat Detection and Response Systems
  • Blockchain Applications for Secure Communication
  • Preparing Telecom Networks for Quantum Computing Threats
• SIEM for Telecom
• SOAR (Security Orchestration)
• Secure 5G Core Design Patterns

6. Emerging Security Challenges in Telecom

• 5G Security Risks & Solutions
  • Standalone (SA) & Non-Standalone (NSA) Security
  • Zero Trust Architecture in 5G
• AI & Machine Learning in Telecom Security
  • Risks of AI in life & telecom
• Supply Chain & Vendor Security
  • Risks from Third-Party Vendors, Compliance & Standards
  • Telecom Supply Chain
• Evolution of Network Technologies
  • SIM Types
  • Phasing Out of 2G / 3G
• Open RAN Security
• Nation-State Attacks & Espionage
• Satellite & NTN Protocol Security
• V2X Mesh Network Robustness

7. Mobile Networks Beyond Telecom

• Mining
• Railway
• Maritime
• Oil & Gas
• Nuclear
• Energy (Power Plants, Grids)
• Water & Electricity Utilities
• IoT / Industry 4.0 / Smart Manufacturing
• Airports / Aviation
• Satellite (as Connectivity Layer)
• Health
• Private Networks use cases/areas of usage

8. Practical Telecom Security Use Cases

• SIM Swap
• GT Leasing Abuse
• SMS-based attacks
• Location tracking attacks
• SS7 Honeypot Setup
• Fuzzing Protocols
• Fake Roaming Operator Case Studies

9. Defensive Engineering & Monitoring

• Telecom SIEM Rules
• DPI Monitoring
• Event Correlation Techniques
• Threat Modeling for Telecom
• Threat Hunting for Telecom

10. Red/Blue Team Toolkit

• Lab Setup for Telecom Security
• Open Source Tools
  • Hermes-dec
• Commercial Tools (P1, Spirent, TeraVM)
• Virtual EPC & IMS

11. Regulations & Global Compliance

• Country-Specific Telecom Security Regulations
• 3GPP & GSMA Security Specs
• NIST - FiGHT approach
• Government Mandates
  • The Role of Telecom in Critical National Infrastructure Security

12. The Future of Mobile Network Security

• Post-Quantum Cryptography
• Direct-to-Device (D2D) 5G
• 6G Early Security Concepts
• Self-Healing Networks
• Network-as-Code & Zero-Trust Automation

13. Industry Events & Community Engagement

• Mobile World Congress (MWC)
  • P1 Security at MWC 2025: Showcasing Telecom Offensive Security Solutions
• GSMA SEC CON
• Black Hat / DEF CON (Telecom Tracks)
• ETSI / 3GPP Security Groups
• Telco Security Meetups & Working Groups
• Fuse (Bochum event (2024-2025-?))
• Media & Interviews
  • SafetyDetectives x P1 Security
  • Washington Post

‍