We eavesdrop on free public Wi-Fi networks

Experts say big brands will continue getting hacked until retailers can better protect their data. Hackers sell your information on the black market, and other criminals then use it to make counterfeit cards that can be used for shopping.

Outsmart us: Don’t save your financial information when you shop online—check out as a “guest” when you can. If you fall prey to an attack, ask your bank to issue you a new credit card, take advantage of any credit monitoring that’s offered, and scrutinize your statements. Stay safe with these 10 ways to protect yourself online.