International Telecommunication Union
ITU
Sectors
Three specialized sectors covering standardization, radiocommunications, and development — each producing security-relevant recommendations.
26 Series
ITU-T
Standardization Sector
Technical standards for telecommunications networks, protocols, and security architectures. Key series: X (Security), Q (Signaling), Y (Future Networks), M (Management).
XYQMGKHE
X.805 · Y.3101 · Q.3050
10 Series
ITU-R
Radiocommunication Sector
Radio regulations and recommendations governing spectrum use, satellite systems, and wireless telecommunications including IMT (4G/5G/6G) standards.
MSFPBOSFSMSNG
M.2150 · M.2012 · S-Series
3 Study Groups
ITU-D
Development Sector
Bridging the digital divide through policy frameworks, national CIIP guidelines, and cybersecurity capacity building for developing nations.
CYBSG1SG2
Cyber Policy · CIIP · SG2
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