SIM Box (GSM Gateway)

SIM Box in context

Subscriber identifiers (IMSI, SUPI, MSISDN, IMEI) are the anchor for authentication, charging, lawful interception and fraud analytics. Any protocol or interface that leaks a permanent identifier is treated as a serious privacy defect, which is why 5G introduced SUCI concealment on the air interface.

Telecom fraud costs operators an estimated $40+ billion per year. Common vectors include International Revenue Share Fraud (IRSF), Wangiri callback scams, SIM box bypass, PBX hacking, subscription fraud and A2P grey routing. Effective defense combines real-time signaling analytics with CDR-side machine learning.

To place SIM Box in the wider telecom-security picture, review DSL, Interconnect Bypass Fraud, OTT Bypass, Bypass Fraud, Traffic Pumping and Toll Fraud.

Related terms

• DSL
• Interconnect Bypass Fraud
• OTT Bypass
• Bypass Fraud
• Traffic Pumping
• Toll Fraud
• Sinkhole
• BGCF

Equipment

SIM, eSIM and provisioning (UICC, eUICC, SM-DP+, OTA)

• eSIM (Embedded SIM, eUICC)
• eSIM Profile Theft
• eUICC
• iSIM
• OTA
• RSP
• SIM
• SIM Swap
• SM-DP+
• SM-SR
• All 12 terms

Articles in the P1 mobile network security guide

Related topic hubs

• Telecom Fraud IRSF, Wangiri, SIM box, PBX hacking and CLI spoofing.
• SS7 Security SS7/MAP/CAP/SCCP attacks and defenses across 2G/3G interconnect.
• VoLTE Security IMS/VoLTE signaling risk: SIP, IMS-AKA, media plane attacks.
• IMS Security Training Training on IMS, VoLTE/VoNR, SIP and RCS security.

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.