This is called an "externality" by economists Yes, and it's been a problem for well over a decade. E.g. a while ago the clowns at D-Link decided to hammer NTP

This is called an "externality" by economists Yes, and it's been a problem for well over a decade. E.g. a while ago the clowns at D-Link decided to hammer NTP servers, then had the chutzpah to call it "extortion" when one operator attempted to get them to stop. https://www.lightbluetouchpaper.org/2006/04/07/when-firmware-attacks-ddos-by-d-link/ https://www.lightbluetouchpaper.org/2006/04/07/when-firmware...