So I'm pretty new to this, but have a Linux system set as a torrent box / emby server. I'm running protonvpn cli with permanent killswitch and qbittorrent set to use the VPN tunnel.

I've been running it for about a month now, but just found out I had a leak early August and got a copyright notice from my ISP. I'm pretty sure this is related to a lock up and crash of the protonvpn gui client, which was shit. I haven't had any notices since, despite doing heavy downloading. I also did not have QBT configured to only use the VPN tunnel at that point.

My question is, is there anything else I can do to prevent leaks? It's got me a bit sketched.