[wanderr]

Back in the olden days, when the ping of death causing a windows BSOD was a thing, if I was online when I got spam I would immediately look for the spammer's ip and send them a ping of death. I could tell it often worked because then I'd get the same spam again 10 minutes later, so I'd do it to them again, then I'd get spammed again and ping them again until eventually they gave up.

I assume their mass mailing program would just start at the top of an email list and send them one by one, without tracking progress, so when the computer crashed they would have to start over. After a few crashes in a row hopefully the spammer would blame the spam sending program for crashing the computer and give up, maybe even demand a refund from whoever sold it to them.