You have probably hopped on a public WiFi network in an airport, hotel, restaurant or café to check e-mail, browse Facebook or catch up on work. We all know the risks in using publicly accessible WiFi, but do you know just how much information you’re making public when you connect to these hotspots? How much you expose depends on the sophistication of those who are snooping around. If someone is taking a quick look at the network, they can identify the type of device you are