Global Title Abuse

Global Title abuse is the SS7 attack pattern in which an adversary sends signalling messages with a forged or unauthorised SCCP Global Title, causing the recipient to act as if the message originated from a trusted peer. It is the foundation of most SS7 location-tracking and interception attacks. Mitigation requires Global Title screening at the SS7 firewall, validation that the calling Global Title matches the originating signalling link, and category-based filtering of MAP operations.

Categories: SignalingSecurity ControlsThreats and Attacks

Global Title Abuse in context

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.

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 Global Title Abuse in the wider telecom-security picture, review Indicators of Compromise (Telecom IoCs), IPS, PCAP, STIR/SHAKEN, 1G and 5G SBA — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

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