I decided I wanted to self-host my blog and decided to update from the old Orchard to Orchard Core. This was a very painful process as there is no current way to import an old site. It's now running in docker on my NAS which should be enough for the few visitors I get.
Previously the blog was hosted in Azure and a lot of the requests I was seeing were probes for exploits. I've put Cloudflare in front of it now to try and reduce the spam requests, and have a secure pipe from the container on my NAS to Cloudflare itself so I don't have to expose anything from my home network.