SEAL (Service Enabler Architecture Layer)

Also known as: Service Enabler Architecture Layer

SEAL is the 3GPP horizontal service layer (TS 23.434) that provides common vertical-application enablers, group management, configuration, identity, location, key management, network resource adaptation, on top of the 5G system. It is used by mission-critical services, V2X and Industrial IoT verticals to avoid re-implementing common functions per application.

Categories: Identity and SubscriberThreats and AttacksProtocols and Standards

SEAL 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 threats range from opportunistic SMS phishing and SIM swap to nation-state grade location tracking and lawful-interception abuse. The common thread is that most attacks exploit the inherited trust model of legacy signaling. SS7 and Diameter were designed for a closed operator community that no longer exists.

To place SEAL in the wider telecom-security picture, review OAM, OT, SIM, TAC, GBA and Denial of Service (DoS).

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