evacuate more than 50,000 residents, because it was more likely they could stay with relatives. thankfully, the mission was deemed a success and everyone could return home just in time for christmas dinner. well, we want to give you a warning about wifi. so many families are traveling, vacationing, or shopping, high-tech thieves are looking to gain access to private information in very public places. nbc's jolene kent explains. >> reporter: at the mall, on the beach, at the airport, free wifi networks and charging ports are everywhere, but these public places are popular targets for hackers. he showed us how hackers do it. he set up an unauthorized unsecure network at the airport and called it airport wifi. within minutes, 15 travelers logged on, not realizing it was an unofficial insecure connection. >> we have a malicious hot spot here. you're punching in what you