DNS Security Extensions (DNSSEC) and Cybersecurity Risk | UpGuard

DNSSEC overview: This article explains DNS Security Extensions (DNSSEC), how it uses cryptographic signatures and a chain of trust to provide DNS data origin authentication and integrity, and how resolvers validate signed zones; it outlines U.S. regulatory expectations (NIST, FISMA, FedRAMP), common deployment limits, security benefits and limitations (e.g., protection from spoofing/cache poisoning but not DoS or typosquatting, and potential exposure of subdomains), basic configuration steps and required records (DNSKEY, DS, RRSIG, A/AAAA), and how UpGuard’s Breach Risk flags DNSSEC-related findings such as “DNSSEC not enabled” and open DNS port 53.