Shadowserver is constantly doing all kinds of port scanning and penetration attempts globally, have been for many years. 

On a residential connection as you describe, have something in place that drops anything from them, and move on with your day. 



On Mon, Jun 28, 2021 at 8:59 AM Scott Aldrich <scott.aldrich.us@gmail.com> wrote:
Anyone have an idea how to get HE/ShadowServer,org servers to stop
attempting to penetrate the comcast drop at my house?

Their website claims altruism.. but my logs dont support that claim.

Scott