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Wireless & Mobility · Foundational

Wi-Fi Protected Access 2 (WPA2)

Wi-Fi Alliance security certification implementing 802.11i with AES-CCMP, in Personal (PSK) and Enterprise (802.1X) modes.

Definition

WPA2 has been mandatory for Wi-Fi certified devices since 2006. WPA2-Personal uses a pre-shared passphrase and is vulnerable to offline dictionary attacks against captured handshakes. WPA2-Enterprise uses 802.1X/EAP for per-user authentication and is still widely deployed, often alongside WPA3.

Exam tip

WPA2-Personal's weakness is offline dictionary attacks on weak passphrases.

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