Telecom Attack Surface Mapping

Telecom attack surface mapping is the systematic discovery and documentation of every externally and internally reachable network element, interface, protocol, and service in an operator's environment. It covers IT assets, signalling endpoints (SS7/Diameter/GTP/SIP/N32), RAN management, OAM, and cloud surfaces, and is the foundation for prioritised hardening and continuous exposure management.

Categories: Radio Access NetworkSignalingRoaming and Interconnect

Telecom Attack Surface Mapping in context

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

Signaling protocols carry the control-plane messages that set up calls, register subscribers and route SMS. SS7, Diameter, GTP-C and SIP are the four dominant families, and interconnect exposure of any of them is treated by GSMA as top-tier telecom risk.

To place Telecom Attack Surface Mapping in the wider telecom-security picture, review Threat Modeling, PLMN, PSTN, Certification Authority (CA), Firewall and Interconnect Security Model: each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

Related topic hubs

  • Signaling Firewall Unified SS7/Diameter/GTP/SMS signaling firewall framework.
  • SS7 Security SS7/MAP/CAP/SCCP attacks and defenses across 2G/3G interconnect.
  • SS7 Firewall GSMA FS.11 category 1/2/3 SS7 message screening at the STP edge.
  • Roaming Security IPX/GRX interconnect risk, home-routed vs local-breakout, SEPP.

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.