SAS (GSMA Security Accreditation Scheme)

The GSMA Security Accreditation Scheme is a peer-reviewed audit programme that certifies the security of mobile-industry sites and services. SAS-UP covers UICC and eSIM production sites; SAS-SM covers eSIM remote provisioning platforms. SAS certification is widely required in operator procurement and underpins trust in SIM, eSIM, and remote SIM provisioning across the ecosystem.

Categories: Core NetworkIdentity and SubscriberProtocols and Standards

SAS 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.

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

To place SAS in the wider telecom-security picture, review EIR, GUTI, ADSL, AES, Conformance Testing and Confidentiality — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

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