Firefox is rolling out DNS-over-HTTPS to their US userbase by default, protecting their users from cyber attacks that target DNS including snooping and censoring internet traffic. whats-next-in-making-dns-over-https-the-default
However, Firefox won’t be enabling the feature by default for UK customers as the UK government currently exploits unencrypted DNS traffic to achieve web blocking and surveillance. These exploits are just as vulnerable to criminal hackers though, so we recommend enabling the setting in Firefox if you haven’t already. Here’s how:
Google is also experimenting with the technology and we may see it included in Chrome in the future.