Evil Twin
An evil twin is a rogue wireless access point that masquerades as a legitimate one in order to trick users into connecting to it.
How to Avoid Evil Twins
Be aware of evil twins by keeping an eye out for suspicious-looking access points. If you’re not sure whether or not an access point is legitimate, ask a staff member or manager for help. When connecting to a wireless network, always double-check the SSID to make sure you’re connecting to the right one.