No, it's not. Why? Because you CANNOT prove in a court of law that there was any damage to you or your property from someone else's 802.11 signals somehow winding up on your property. And it would be VERY hard to prove since - by law - unlicensed 802.11 spectrum MUST accept interference from any other device. That's why you have no civil - and definately no criminal - case at all. No lawyer is going to even attempt to try that case. Let's say YOU were running your own 802.11 wi-fi lan and the neighbor's wi-fi router was "jamming" you up somehow, probably because you're both running on the same channel. Not a damn thing you can do other than jump channels (freqs) since both devices are operating in accordance with the law. But that's what the "auto" setting on most wi-fi routers is there for.
The flashlight analogy I gave was for connecting. To be able to actually use a wifi connection, you have to transmit back to the access point, at which time you are connected to their network.