Lateral Movement (Telecom)

In telecom networks, Lateral Movement is the post-compromise progression of an attacker across systems, for example from an exposed OAM jump host to network function management interfaces, from there to signaling nodes, and then to roaming-facing perimeters. East-west segmentation, PAM, and detection of unusual NF-to-NF or OAM-to-NF flows limit lateral movement.

Categories: Core NetworkSignalingRoaming and Interconnect

Lateral Movement (Telecom) 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.

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 Lateral Movement (Telecom) in the wider telecom-security picture, review FS.07, FS.19, GGSN, GTP, GTP Firewall and HLR — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

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.