MITRE D3FEND

In telecommunications, MITRE D3FEND is a complementary framework to ATT&CK that catalogs defensive countermeasures and the techniques they neutralize. Applied to telecom, it helps map controls such as signaling firewalling, NF authentication, slice isolation, and OAM bastioning to the specific adversary techniques they are designed to defeat.

Categories: SignalingSecurity ControlsEncryption and Cryptography

MITRE D3FEND in context

Signaling protocols carry the control-plane instructions that set up calls, register subscribers, hand over sessions 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 FS.11 / FS.19 / FS.20 as a top-tier telecom risk.

Security controls in telecom span signaling firewalls (SS7/Diameter/GTP screening at the network edge), transport encryption (IPsec, TLS, PRINS), identity and access on OSS/BSS, and monitoring at both the packet and log level. Controls are audited against GSMA FS.11/FS.19/FS.20/FS.36 and, in Europe, NIS2 sectoral rules.

To place MITRE D3FEND in the wider telecom-security picture, review ACL, Operational Security (OPSEC), SS7 Interconnect Security, Hardening, MITRE FiGHT and Any-Time Interrogation (ATI).

Related terms

Related topic hubs

  • SS7 Firewall GSMA FS.11 category 1/2/3 SS7 message screening at the STP edge.
  • Signaling Firewall Unified SS7/Diameter/GTP/SMS signaling firewall framework.
  • SS7 Security SS7/MAP/CAP/SCCP attacks and defenses across 2G/3G interconnect.
  • Diameter Firewall GSMA FS.19 screening at the Diameter Edge Agent on S6a/S9/S13.

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