Confessions of a Wi-Fi Thief
Flip the scenario around. Would you want to take responsibility for things that complete strangers do on your wifi without your knowledge? If the answer is no, then you should apply the same ethical standards when you're considering other people than when you're considering yourself.
1. Simple solution: Don't do illegal activities on their network. If you are doing illegal activities, you're probably not terribly concerned with ethics, anyway.
McCain Asks Supporters To Campaign On Blogs
But above all else, I NEVER NEVER NEVER thought I would see a man who was a torture victim and POW stand up and support that very torture by HIS OWN COUNTRY. I'm not a McCain supporter, but this assertion is simply incorrect. McCain (along with Ron Paul of course) was the only candidate in the GOP debates to take a stand against torture, arguing pragmatically that torture has the unintended consequence of putting US troops in danger of being tortured themselves. While that's a far cry from the elevated moral argument that torture is simply wrong prima facie, it is still an opposition to the practice.
McCain has also called for the US Army to specifically train its interrogators to not torture. See for example this news report: http://firstread.msnbc.msn.com/archive/2007/12/15/519269.aspx
The specific quotation from him is: "I would create an Army advisory committee with 20,000 soldiers to partner with militaries abroad and launch a crash program in civilian and military schools to prepare more experienced languages such as Arabic, Chinese, Farsi, and others and create a new specialty in strategic interrogation -- a new group of strategic interrogators so that we never have to or feel motivated to torture anyone ever again."