That's good. You definitely need a password on your home network. But it also needs to be using WPA2. The older encryption for wireless networks is WEP. That is not completely secure. So make sure you are using WPA2.
Yes, WEP key is what we have. So, I will talk to my son and see about a WPA2. I’m sure he knows. Drat. See? No matter what we do, they are a step ahead. Darn bad guys. They take the fun out of all our fun. I envision a day we can find them and cane them.