Years ago when wifi first became a thing my friends and I would drive around with early Wireshark and a Pringles can antenna and change all the open SSID's we could find to "Call [some number] to secure your network". All the routers back then were open by default so we could easily do a few dozen per day.

When they would call (and they always called), we would then show up and charge the person between $50-$250 (or however much we thought we could get) to change the SSID and setup WEP.

When times got desperate and we needed a new flat screen TV we returned back to our previous victims, and, having their WEP passwords we setup, changed it back to the original message:

"It's a good thing you called us -- the hackers got in again, but we have some new defenses against them. Stick with us. We'll protect you."

As a bunch of tech-savvy poor kids, it was very satisfying taking money from rich, old (mostly white) people. We were able to quit our jobs working fast food with our new found venture. That somehow made up for the unethical nature of it all in the youthful minds of late teen and early 20's punks.