MVNO (Mobile Virtual Network Operator)

A wireless communications service provider that does not own the underlying network infrastructure. MVNOs lease network capacity at wholesale rates from MNOs and resell it to customers under their own brand. MVNOs manage their own billing, customer service, marketing, and sales while relying on the host MNO's radio access and core network. MVNOs enable market competition and serve niche segments without requiring spectrum licenses or infrastructure investment.

Categories: Radio Access NetworkCore NetworkSignaling

MVNO in context

The radio access network is the layer where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations, downgrade attacks and jamming, and defenses hinge on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.

The mobile core is where subscriber sessions, mobility and policy live. 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. Core exposure is the difference between a single-subscriber leak and a fleet-wide breach.

To place MVNO in the wider telecom-security picture, review IAP, Man-in-the-Middle (MITM), Mobile Network, 5G SA, AMF and CAPEX.

Related terms

Related topic hubs

  • SS7 Security SS7/MAP/CAP/SCCP attacks and defenses across 2G/3G interconnect.
  • Signaling Firewall Unified SS7/Diameter/GTP/SMS signaling firewall framework.
  • MVNO Security MVNO/MVNE threat model and host-network isolation.

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.