wifis had nothing to do with them. these were fake way pies. >> reporter: and the malicious wifi isn't the only scrooge in town, hackers are creating fake apps that look like the real deal, like this one called amazon reward, found in third party app stores, trying to lure you in with deals that don't actually exist. >> they look exactly like the amazon app, they use the real logo. in fact, it is stealing information and sending you to a fake website with fake coupons. >> reporter: we reached out to all the businesses here, amazon tells us, quote, we encourage customers to download content only from sources they trust. the fashion show mall says it takes id seriously and does periodic audits of our wifi systems and did not find suspicious networks. only download from the official google and app stores. if you use wifi at the mall, any hot spot with the word free in the name is probably not a good idea. for "on the money." i'm andrea day. >> joining us to talk about this problem is jeremy cap lane the editor-in-chief of digital trends, guys, well colorado it's startling. how much of a problem is this already and what ar

. >> how hackers are able to easily trick you into using fake public >> reporter: at the mall, on the beach and at the airport, free wifierywhere, but these public places are popular targets for hackers. rsa showed us how hackers do it. he set up an unauthorized insecure wifi network at the airport and called it airport wifi. within minutes 15 travelers logged on not realizing it was an unofficial connection. >> you're punching in what you think is going to be a safe user name and pass word. >> and just like that your data is gone. and those helpful charging stations are also prime targets. when you plug your phone into a usb port or box comes up asking if you trust the connection. >> this is actually connected to a is looking at your device. >> i realized somebody was trying to enter my computer. >> he was hacked at the air pot. >> you don't know what the bank's response is going to be and your mind races. >> so how can you protect yourself? experts say don't charge in a usb port. use a plug. be war sheary of pop--- wary of pop-up networks. >> slow down and be cautious. >> and dare to be disconnected. putting your phon