Wired Equivalent Privacy (WEP) security is an older superseded authentication and data encryption mode that has been replaced by the improved WPA-PSK and WPA2-PSK authentication and data encryption methods. The WEP option only displays if you select Up to 54 Mbps from the Mode menu.
Because WEP is easily decoded, NETGEAR recommends that you use WPA or WPA2, which are the latest security options on your NETGEAR router. For more information about setting up WPA or WPA2, visit How do I change the WiFi password or security level on my NETGEAR router?.