Businesses and home users are quickly adopting wireless networkingâ€”and for good reason. It’s cheap, convenient, easy to set up, and provides great mobility. In fact, more than one third of PC Magazine readers have already installed wireless networks in their homes. The freedom from tangled cables is intoxicating but comes with a price. A wireless network can broadcast far outside your building. With a powerful antenna and some widely available hacking software, anyone sitting near your installationâ€”or even driving byâ€”can passively (without alerting the target) scan all the data flowing in your network.