This morning my kid asked the voice assistant to "Turn off the computers in this house".
I heard it, thought well that's a strange request but seems harmless because how is home assistant gonna turn off computers.
Me a little while later, "why is shit broken? What's happening!"
Turns out dumb me had adguard exposed to the voice assistant, it switched off all the adguard settings including the DNS rewriting that is the cornerstone of many of my self-hosted services.
I've since revoked that access.
I spent a week trying to work out why my traefik instance wasn't forwarding http & Https traffic to any of my docker containers. By the fifth day I remembered that the week before I'd decided it would be a good idea to test locally before uploading to my vps, by adding my site URLs to my hosts file. (All except traefik: which meant I was able to access the dashboard and see all my routers online... I just couldn't reach any of them, with no logs for access etc... drove me insane.).
It was only until I tried accessing from my mobile that I realised what I'd done.
Should've known better, but that's the price we pay for "good ideas" at 2am.
I have definitely done similar things. Now you mention it, I remember adding a hosts file entry for testing recently and can't remember if I removed it. I just checked my laptop and two servers and didn't find anything weird so now it's gonna bug me.