DNS over HTTPS - https://developers.cloudflare.com/1.1.1.1/dns-over-https/
How to enable DNS over HTTPS in Firefox - https://www.zdnet.com/article/how-to-enable-dns-over-https-doh-in-firefox/
Check your browser security - https://www.cloudflare.com/ssl/encrypted-sni/
Secure DNS doesn't make us the villain - https://www.theregister.co.uk/2019/07/06/mozilla_ukisp_vallain/