WPA3 (Wi-Fi Protected Access 3)

Wi-Fi Protected Access 3 (Wi-Fi Alliance, 2018) replaces WPA2's weaknesses by using Simultaneous Authentication of Equals (SAE) instead of the four-way handshake, defeating offline dictionary attacks and providing forward secrecy in personal mode. WPA3-Enterprise adds 192-bit cryptography options. WPA3 is the recommended baseline for new deployments.

Categories: Core NetworkIdentity and SubscriberSecurity Controls

WPA3 in context

The mobile core is where subscriber sessions, mobility and policy live. 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. Core exposure is the difference between a single-subscriber leak and a fleet-wide breach.

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.

To place WPA3 in the wider telecom-security picture, review WPA, NIST, UDM, WCDMA, SBA Token Forgery and VoWiFi.

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