Arising Media

Challenge we solve

How we solve Missing DNS CAA (Certification Authority Authorization) Records

In our experience, A missing DNS CAA (Certification Authority Authorization) record means the domain's DNS zone has no record specifying which certificate authorities are permitted to issue TLS certificates for it. Without one, any publicly trusted CA can issue a certificate for the domain if it passes standard domain validation, since CAA is opt in. This is a supply chain security gap, it doesn't cause an outage, but it removes a control that would otherwise block certificate mis issuance from a compromised or careless CA.

How we solve Missing DNS CAA (Certification Authority Authorization) Records

In our experience, A missing DNS CAA (Certification Authority Authorization) record means the domain's DNS zone has no record specifying which certificate authorities are permitted to issue TLS certificates for it. Without one, any publicly trusted CA can issue a certificate for the domain if it passes standard domain validation, since CAA is opt in. This is a supply chain security gap, it doesn't cause an outage, but it removes a control that would otherwise block certificate mis issuance from a compromised or careless CA.

Why this happens (and how we fix it)

In our experience, CAA is an opt in DNS record type, and most domain registrars don't add one by default or prompt an admin to set one during setup, so it simply never gets created unless someone particularly knows to add it. DNS zones tend to get configured once at domain registration and rarely revisited afterward, which means even security conscious teams that would add a CAA record today never circle back to a domain that's been live for years.

What it costs you while it goes unfixed

In our experience, without a CAA record naming which certificate authorities are allowed to issue for the domain, any publicly trusted CA can issue a verifiable certificate for it as long as domain validation passes, which is the exact control gap that's been exploited in verifiable mis issuance incidents at other companies. It doesn't cause an outage and won't show up in a normal audit, but it removes a low cost safety net that would otherwise block a fraudulent certificate before it's ever trusted by a browser.

How we resolve it

01 Diagnose
We audit your current setup and identify the root cause.
02 Fix
We implement targeted corrections using proven methods.
03 Verify
We confirm the issue is resolved and monitor for recurrence.

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