Wifi signals don't know where your house ends and where your neighbor's begins. This wifi signal leakage gives hackers and neighbors the opportunity to find your wireless network and attempt to access it.

The Problem: While a small amount of overflow outdoors is not a problem, it is important to keep this leakage to a minimum. This is important because the further your signal reaches into the neighborhood, the easier it is for others to detect and exploit.

The Solution: If you haven't yet installed your wireless home network, make sure to position the router or access point in the center of the home rather than near windows or doors. If you live in an apartment, consider that a wifi network is restricted in part based upon the materials that it must pass through, the more walls, doors, and metal the signal passes through, the weaker it is. So if your goal is to reduce leakage, you might consider mounting your wifi in a closet in order to reduce signal strength.