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WPA-Personal and WPA2-Personal remain vulnerable to password cracking attacks if users rely on a weak password or passphrase. WPA passphrase hashes are seeded from the SSID name and its length; rainbow tables exist for the top 1,000 network SSIDs and a multitude of common passwords, requiring only a quick lookup to speed up cracking WPA-PSK. [34]
[3] [4] The new standard uses 128-bit encryption in WPA3-Personal mode (192-bit in WPA3-Enterprise) [5] and forward secrecy. [6] The WPA3 standard also replaces the pre-shared key (PSK) exchange with Simultaneous Authentication of Equals as defined in IEEE 802.11-2016 resulting in a more secure initial key exchange in personal mode.
A major security flaw was revealed in December 2011 that affects wireless routers with the WPS PIN feature, which most recent models have enabled by default. The flaw allows a remote attacker to recover the WPS PIN in a few hours with a brute-force attack and, with the WPS PIN, the network's WPA/WPA2 pre-shared key (PSK). [3]
Wi-Fi Protected Access 2 (WPA2) security, [9] which aligns with IEEE 802.11i. WPA2 is available in two types: WPA2-Personal for consumer use, and WPA2 Enterprise, which adds EAP authentication. Optional: Tests corresponding to IEEE 802.11h and 802.11d. WMM Quality of Service, [10] based upon a subset of IEEE 802.11e.
The Wi-Fi Alliance refers to their approved, interoperable implementation of the full 802.11i as WPA2, also called RSN (Robust Security Network). 802.11i makes use of the Advanced Encryption Standard (AES) block cipher, whereas WEP and WPA use the RC4 stream cipher.
WPA2 uses an encryption device that encrypts the network with a 256-bit key; the longer key length improves security over WEP. Enterprises often enforce security using a certificate-based system to authenticate the connecting device, following the standard 802.11X. In January 2018, the Wi-Fi Alliance announced WPA3 as a replacement to WPA2 ...
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With a network without a password, each WPA3 device that connects to it will still have its connection encrypted, OWE does encryption, not authentication, Evil twin (wireless networks) attack protection requires either WPA3-Personal or WPA3-Enterprise. [5]
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