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this post was submitted on 21 Jul 2023
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This brings a disturbing thought to mind.. if an instance domain name like foo.bar lapses and someone else snaps the domain up (or of it gets stolen) can the new controller plop Lemmy on a server and be instantly federated? If so what kind of damage could they do?
This is why you don't let your domain registration lapse. It's not the only way computers on the internet verify each other's identity, but a hell of a lot of internet security features are based around domain names, so keeping yours functioning is a very big deal.
Domain registration ≠ internet security. Root of trust is in cryptographic keys, not domains. DNS is not the security cornerstone you make it out to be. PKI says hi!
Yes, but it is very quick and cheap to get a domain validated cert from a CA that is generally trusted by most web browsers, so once the bad actor has the domain, the should be able to trick most users, only maybe certificate pinning might help, but that is not widely used.