> curious, how were these notices served to you when you were receiving them? Were they sent to the colo who forwarded them to you?

Yup, they would send their spam to `abuse@provider.tld` regarding an IP address, my provider would look up the IP address and forward it to me.

Presumably if they ever cared to escalate they could file a lawsuit and subpoena the provider for my identity, but they never did. They're looking for easy settlements and that would cost time and money.