GSMA SCAS (Security Assurance Specification)

In telecom networks, GSMA SCAS (Security Assurance Specification) is a set of test requirements derived from 3GPP SECAM that vendors must meet for each Network Function class (AMF, SMF, UPF, UDM, and others) under the NESAS scheme. SCAS-based assessments give operators evidence-based assurance about the baseline security of the products they deploy.

Categories: Radio Access NetworkCore NetworkProtocols and Standards

GSMA SCAS in context

The radio access network is where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations and downgrade attacks; defenses rest on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.

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.

To place GSMA SCAS in the wider telecom-security picture, review NESAS, TSC, 5G, 5G SA, 5G NSA and 5GNR — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

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