There you go again.

"Theft" has a very specific legal meaning, and I have seen no case law that applies it even to the more clear cut case of music sharing, much less "use of a non-secured wifi connection and the Internet uplink behind it".

Certainly theft is bad.

People on your side of this argument merely continue not to make a valid, supportable case that the behaviour in question (being technically unsavvy, bringing home a new laptop, not realizing its your neighbor's wifi your getting to the internet with) constitutes anything resembling bad behaviour; see about about 'scienter', and until you can counter that particular argument, stop throwing around words that -- were you talking about a particular person -- might well constitute slander.

I am not a lawyer, but I've been playing one on the Internet for over 25 years...