And yes, if someone did commit a crime using my network the police might visit, but what better defense is there than the fact that I have an open wireless network? If I enabled wireless security on my network and someone hacked it, I would have a far harder time proving my innocence.In Germany this defense wouldn't really help you much. You're (partially) responsible for the crimes that are committed over your unsecured network. It's called "Mitstörerhaftung".
