The @Scale Conference 2019
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@Scale 2019: DNS privacy at scale: Lessons and challenges

It’s no secret that the use of the domain name system reveals a lot of information about what people do online. The use of traditional unencrypted DNS protocols reveals this information to third parties on the network, introducing privacy risks to users as well as enabling country-level censorship. In recent years, internet protocol designers have sought to retrofit DNS with several new privacy mechanisms to help provide confidentiality to DNS queries. The results of this work include technologies such as DNS-over-TLS, DNS-over-HTTPS, and encrypted SNI for TLS. Nick shares some of the technical and political challenges that arise when deploying these technologies.

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