Holiday shopping increases the use of online shopping services and unsecured Wi-Fi in public places. Using a Wi-Fi hot spot at the airport or mall to shop on line is a greater risk this time of the year. Among other risks, free Wi-Fi links may not be legitimate and often have similar names to the airport, hotel or store near you offering free Wi-Fi.
Also, most all legitimate shopping service website purchasing locations have addresses beginning with "HTTPS" vs. "HTTP" (the "S" is for "Secure") which indicates a layer of security (encryption) to the connection not present when the address is preceded solely by HTTP. Shopping from a HTTP location makes it more likely a hacker can gain access to your personal information.