I think this is Nextcloud, they have been sending abuse complaints to my provider because we haven’t patched our Owncloud, yes Owncloud, yet. They sent a link to https://scan.nextcloud.com/results/ with your results.
I have already sent them a email to stop doing this, it’s abuse of the abuse process in my opinion. Also it creates a lot of unnecessary hassle with providers while I have the patch moment planned already.