UDSF (Unstructured Data Storage Function)

UDSF in context

The mobile core carries subscriber sessions, mobility and policy. In 4G it is the EPC (MME, HSS, S/PGW); in 5G it is the Service-Based Architecture with AMF, SMF, UPF, AUSF, UDM and the NRF.

Cryptography in telecom spans air-interface ciphers (A5/1, A5/3, ZUC, SNOW, NEA/NIA), transport (IPsec, TLS) and identity (AKA, 5G-AKA, EAP-AKA'). Weak or downgradeable ciphers remain a live risk on 2G/3G fallback.

To place UDSF in the wider telecom-security picture, review UDR, Network Slice, MEC, SMO, SBI and IAMF: each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

• UDR
• Network Slice
• MEC
• SMO
• SBI
• IAMF
• QoS
• UDM

Related topic hubs

• Diameter Security 4G/LTE Diameter threats across IPX/roaming and DEA defenses.
• 5G Security 5G SBA, SEPP, SUCI, 5G-AKA, N32 and service-based interface security.
• 5G NEF Security Network Exposure Function security in the 5G core.
• 5G Penetration Testing Pentesting the 5G core, SBA, SEPP, and gNB interfaces.

More from the TelcoSec Glossary

Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.