Thanks for the replies. Yes, I'm running AES/WPA2 Security and Yes I'm hidden. So you can only SSH into someone's laptop if they're on the same network then? I guess the guys at Derby Con were all running off the same WiFi connection then and that's how the other guys SSH'ed into their computers. Like I said, I'm a Novice, not a Noob so I do know a little bit about Linux, WiFi, ect. Not to come off as a smarty pants but give me a little credit, LOL.
So, basically, if I go to a public WiFi Cafe and connect to their WiFi and use WPA2 I should be ok then? Long as I don't connect to a Pineapple and get a Man in the Middle attack I should be ok then. Thanks. :)