DNSSEC: An Introduction

The Domain Name System (DNS) is one of the oldest and most fundamental components of the modern internet, used to translate domain names into numeric IP addresses. However, DNS was designed without strong security mechanisms in place, making it vulnerable to attacks such as cache poisoning and on-path attacker attacks. To address these issues, a set of security extensions called Domain Name System Security Extensions (DNSSEC) were developed. These extensions provide authentication for DNS records, allowing resolvers and applications to trust the data received. While adoption of DNSSEC is still relatively low, it has significant potential to improve the trustworthiness and integrity of the internet.

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