DoH, or DNS over HTTPS to be precise, has featured in mainstream media in recent weeks. Both Mozilla and Google have confirmed that their Firefox and Chrome browsers will be implementing DoH by default but what exactly is it and why does it have ISP’s worried?

To recap, DNS (or the Domain Name System) is used to translate a human-readable host address such as to its underlying IP address that your computer can connect to in order to receive content.  

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