I’m not expert but for the sake of getting some discussion going:

Don’t open ports on your router to expose services to the open internet.

Use a vpn when torrenting and make sure your torrent client is set to only use the vpn’s network adapter. This way, if your vpn drops out the torrent client can’t reach the internet.

I keep everything local and use Tailscale to access things while I’m away from home.

I’ve seen a post from you before and thought I stumbled upon my wife’s secret account. I did a double take for sure.

We have your cat’s doppelgänger 😀.

The issue I ran into with obsidian is that it saves the file with each keystroke. I wanted to store my notes in proton drive but the constant saving would cause it to error out. There is no adjustment on the save interval either. This is probably done to push people into paying for their cloud service. It felt like too much of a hassle and I’m not a huge note taker anyways so I get by with the notes app on my phone.