I have pihole running on an old Raspberry Pi B and it just chugs along. Except for the wonky update they put out a few months ago. That took some cleaning up after.
I check the dashboard a few times a day and it’s a good way to notice network issues and misbehaving programs.
I’m also running it through cloudflared to encrypt the requests, in case my ISP is snooping on them.

It displays fine by default, but the image only updates every several seconds. I’m talking about a live video feed, which needs some kind of special frame which has to be bolted onto HA somehow.

I haven’t, that’s the problem. It seems like it’s possible, but I’ve given up trying for the moment.

I have a Reolink PoE camera. It works fine. As far as I can tell, it only uses the internet to check for updates and set the time, but I have it blocked off anyway. Home Assistant was actually causing it to check for updates, too, so that got disabled.
I don’t record, so I can’t help you there.
I will say that is a pain to get Home Assistant to display real-time video instead of a slide show.

Right? Has this ever worked for anyone? I’ve never bothered because of how easy it is for spammers to bypass.

Thought I was on /c/AneurysmPosting

CISA still exists? Someone better get on that.

Bitwarden Authenticator because Bitwarden seems to have a good reputation. I don’t use their password manager, though.
It does seem faintly insecure that it displays all of the codes at once on one page, but I’m having trouble imagining a scenario where it’s actually a problem.

I have a Reolink PoE camera. It’s plugged into Home Assistant, and some setting in the integration had it phoning home constantly looking for updates. I turned that off and now it only connects outside of my network to sync the time.
The camera has survived outside for a few years now, so no complaints.