I know their are a lot of security concerns with traveling business people. They plug into a public hotspot and are connected on the same LAN as many others. If they're not smart about their actions while connected they could run the risk of disclosing important data. Also, since everyone is connected through one router, at least in smaller places like coffee shops, sniffing can be a problem. I know there are many other security issues but I don't know the details of them. I'm always interested in learning though.