Knowing the footprint of your wireless network is a critical part of understanding your digital security risk. It’s not an obvious thing, because the network itself is an invisible cloud of radio waves. Mapping a wireless network provides a “heat map” which can show gaps in your network coverage, but it can also show cases where your network extends outside of your physical space. Whether it’s the lobby of an adjacent building or simply your parking lot, such areas can be used by attacker to record data as it is moving around your network. Having this access gives an attacker a chance to break your encryption and possibly gain access to your network.