Sectigo RSA Domain Validation Secure Server CA

Sectigo RSA Domain Validation Secure Server CA is a publicly trusted intermediate certificate authority operated by Sectigo Limited and chained to USERTrust RSA Certification Authority. It is recognized by all mainstream browsers and operating system trust stores, so the certificate itself is not a phishing indicator - the same intermediate signs millions of legitimate sites. phishunt only flags the specific domains listed below as suspicious; Sectigo RSA Domain Validation Secure Server CA as a CA is fine.

Yes. Sectigo RSA Domain Validation Secure Server CA is a publicly trusted intermediate CA operated by Sectigo Limited, included in the Microsoft, Apple, Google and Mozilla root trust stores. Every mainstream browser automatically accepts certificates it signs. The intermediate itself is not a phishing signal — what matters is the specific domain. phishunt flags only the suspicious domains listed below; Sectigo RSA Domain Validation Secure Server CA keeps signing millions of legitimate sites.

Sectigo RSA Domain Validation Secure Server CA is operated by Sectigo Limited. It is a RSA intermediate that chains up to the USERTrust RSA Certification Authority root, which Sectigo Limited also owns. Anyone can look up the chain in the public Certificate Transparency logs; the same operator publishes a Certificate Policy / Certification Practice Statement (CP/CPS) describing how issuance and revocation work.

When a browser shows Sectigo RSA Domain Validation Secure Server CA as the certificate issuer for a site, it means TLS was validated through Sectigo Limited's RSA chain ending at USERTrust RSA Certification Authority. That is normal for tens of millions of legitimate sites that use Sectigo Limited's automated DV TLS. The certificate proves the connection is encrypted and that the certificate matches the hostname — it does not prove the site behind it is trustworthy. Always verify the domain name itself.

Sectigo Limited issues RSA domain-validated certificates automatically and at no cost (or very low cost), which is the exact workflow scammers need to put HTTPS on a throwaway domain. Domain validation only proves that the requester controls the domain name, not that the site behind it is trustworthy. phishunt lists the specific domains currently flagged below — those are the suspicious ones, not Sectigo RSA Domain Validation Secure Server CA itself.

In a desktop browser, click the padlock in the address bar and open the certificate viewer. Confirm the issuer chain ends at USERTrust RSA Certification Authority, that the subject matches the domain you expect, and that the notAfter date has not passed. A valid Sectigo RSA Domain Validation Secure Server CA certificate only proves TLS was negotiated correctly — always verify the domain name itself belongs to the service you intended to visit.

Sectigo RSA Domain Validation Secure Server CA and its siblings (Sectigo RSA Organization Validation Secure Server CA, ZeroSSL RSA Domain Secure Site CA) share the same operator (Sectigo Limited) and roll up to the same root (USERTrust RSA Certification Authority). CAs rotate multiple intermediates so that if one key ever has to be revoked, the damage is contained. As a user, you can treat all of them as the same trust anchor.