eSIM (Embedded SIM, eUICC)

eSIM (Embedded SIM, eUICC) 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 security is written into standards from 3GPP, GSMA, ETSI, IETF and ITU-T. Understanding which body owns which specification, and how the specs interlock (for example 3GPP TS 33.501 with GSMA FS.34 for 5G SBA security), is essential for both design and audit work.

To place eSIM (Embedded SIM, eUICC) in the wider telecom-security picture, review eUICC, RSP, SAS, SECA, EIR and VPN.

Related terms

• eUICC
• RSP
• SAS
• SECA
• EIR
• VPN
• E.164
• Key Management

Equipment

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

• eSIM Profile Theft
• eUICC
• iSIM
• OTA
• RSP
• SIM
• SIM Box
• SIM Swap
• SM-DP+
• SM-SR
• All 12 terms

Articles in the P1 mobile network security guide

Related topic hubs

• VoLTE Security IMS/VoLTE signaling risk: SIP, IMS-AKA, media plane attacks.
• IMS Security Training Training on IMS, VoLTE/VoNR, SIP and RCS security.
• IMSI Catcher Rogue base stations, IMSI capture and detection.
• SIM Swap Attack SIM swap fraud, port-out and account takeover risk.

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.