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dnssec

AI security interview questions tagged dnssec, across every topic.

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Concepts behind "dnssec"

Explanations of the mechanisms these questions rely on.

Foundational
Network Security
DNS Security: Resolution, Poisoning, DNSSEC and Encrypted DNSDNS resolution passes through a stub resolver, a recursive resolver and a chain of authoritative servers, with caching at each step. Attacks target each part: forged responses that poison caches, malicious or compromised resolvers, takeovers of registrar and DNS-provider accounts, and dangling records that allow subdomain takeover. DNSSEC signs records so validating resolvers can detect forgery but provides no confidentiality; DNS over TLS and HTTPS encrypt the client-to-resolver hop but trust the resolver. TLS certificate validation remains the backstop when DNS lies.
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