An evil twin, in security, is a rogue wireless access point that masquerades as a legitimate hot spot.
Windows Wi-Fi Sense allows Windows 10 users to get Internet access from public hotspots and private wireless local area networks (WLANs) that have been shared by friends. Although Wi-Fi Sense is enabled by default in all editions of Windows 10, the feature can be turned off by users and access can be disabled by wireless network administrators.
Wired Equivalent Privacy (WEP) is a security protocol, specified in the IEEE Wireless Fidelity (Wi-Fi) standard, 802.11b, that is designed to provide a wireless local area network (WLAN) with a level of security and privacy comparable to what is usually expected of a wired LAN. A wired local area network (LAN) is generally protected by physical security mechanisms (controlled access to a building, for example) that are effective for a controlled physical environment, but may be ineffective for WLANs because radio waves are not necessarily bound by the walls containing the network.