said by BF69:
If I leave my car door unlocked and the keys in the car it doesn't mean someone has the right to steal my car, but it doesn't mean I wasn't NEGLIGENT.
Failing to take proper care in doing something
Except this isn't a car. And never mind the fact that if they want to leave their WiFi open it's up to them and there's nothing morally wrong or illegal about it.
Hell, there's whole CITIES that have open WiFi. Such as the one i am in right now (Chihuahua, Chihuahua)
The government here has open WiFi everywhere it can reach. The range is quite long, but of course the speed is laughable. But if you want to access it all you have to do is step outside and you can access their open WiFi.