SCP Abuse

In telecommunications, SCP Abuse refers to attacks targeting or leveraging the 5G Service Communication Proxy, which mediates traffic between Network Functions. A compromised or misconfigured SCP can observe SBA service calls, alter routing, strip OAuth2 tokens, or pivot between slices, making strict TLS, token validation, and SCP hardening critical.

Categories: Core NetworkSecurity ControlsThreats and Attacks

SCP Abuse 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.

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

To place SCP Abuse in the wider telecom-security picture, review N6, 5G SBA, ACL, AES, A5/0 and AMPS — 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.