Table of Contents - X.1821 (06/2026) - Guidelines and technical requirements for the analysis of IMT-2020/5G network asset security risk

1	Scope
2	References
3	Definitions
	3.1	Terms defined elsewhere
	3.2	Terms defined in this Recommendation
4	Abbreviations and acronyms
5	Conventions
6	Overview
7	Scope of IMT-2020/5G network assets
8	Requirements of asset data collection for IMT-2020/5G asset security risk analysis
	8.1	Requirements of IMT-2020/5G network asset property data
	8.2	Requirements for IMT-2020/5G network asset security data
	8.3	Requirements of IMT-2020/5G asset data collection
9	Requirements of IMT-2020/5G network asset security risk analysis
	9.1	IMT-2020/5G network asset security event analysis
	9.2	IMT-2020/5G network asset security vulnerability detection
	9.3	IMT-2020/5G network asset security baseline verification
	9.4	IMT-2020/5G network asset vulnerability analysis
	9.5	IMT-2020/5G network asset risk analysis
10	Guidelines for security risk analysis of IMT-2020/5G network assets
Appendix I – Clarification of the roles of Recommendations ITU-T X.1818 and ITU-T X.1821
	I.1	Overview of Recommendation ITU-T X.1818
	I.2	Overview of Recommendation ITU-T X.1821
	I.3	Differences between Recommendations ITU-T X.1818 and ITU-T X.1821
	I.4	Guidance on use of ITU-T X.1821
	I.5	Summary
Appendix II – Example grading scales for vulnerability and risk analysis
Bibliography