![]() ![]() Remember back when ISPs used to route domains that didn't resolve to their homepage or ads? This should prevent that, and it can also make a dent against regulatory attempts to block traffic to certain sources, like the UK government's repeated attempts to block adult content.Īndroid has already supported one method of using DNS over TLS to fix this issue, allowing you to have an encrypted query to a DNS server - and that means you can trust the address that's provided when you ask, assuming you trust the server. Making these queries in an unencrypted way is also a privacy concern, as someone in the right position could see which sites you're visiting or potentially even interfere with accessing certain ones. There are ways to plug the gaps in security even with this relatively insecure query, but the system still has a "bootstrapping problem," where the chain of trust in any order of operations becomes difficult to establish. And, it turns out, DNS queries aren't actually done in a secure method by default, exposing you to things like man-in-the-middle attacks where someone can point you at the wrong place when you ask for an address. That's not a real address, just an abstraction for the true location you need to connect to - the "domain name" is tied to an IP address.įundamentally, when you type into your address bar, you're looking up that name in a sort of phone book - that's the DNS system. See, when you visit a web address, you aren't connecting to a string of words. While you might already be aware of things like HTTPS connections as being a more secure way to browse the internet (thankfully, the default experience almost all the time now), there's actually still a gap in security that happens when you actually navigate to a new site.
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