First is important to mention that the protocol WPA2 was broken.
We have different protocols to ensure that our wireless are secure, in the close history we have: WEP, WPA and WPA2. Each one with their weakness and strengths.
Is important to know a little more about each protocol
Wired Equivalent Privacy (WEP)
It was created to protect at the same level all the wired networks. Now all of us know is very easy to broke and no body wants to use it more.
Wi-Fi Protected Access (WPA)
Introduced as an interim security enhancement over WEP while the 802.11i wireless security standard was being developed.
Wi-Fi Protected Access version 2 (WPA2)
Based on the 802.11i wireless security standard, which was finalized in 2004. The most significant enhancement to WPA2 over WPA is the use of the Advanced Encryption Standard (AES) for encryption.
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