WPA, or Wireless Protected Access, is a security standard chosen by hardware manufacturers to protect users from the risk of wireless network hacking. It replaces the WEP (Wired Equivalent Privacy) system, which was considered insufficient to protect businesses.
WPA supports all the current WiFi standards: 802.11a, 802.11b, 802.11g and 802.11i.
WPA uses a new data encryption algorithm based on dynamic key management, the lack of which was one of the weak points of WEP. It also has a user identification system that is based on a central authentication server. A special WPA mode allows private individuals to benefit from this security without having an identification server.