Glossary · Security and privacy
CAA record
A DNS record naming which certificate authorities may issue certificates for a domain.
What CAA record means
A DNS record naming which certificate authorities may issue certificates for a domain. An authority that is not listed must refuse, which limits the damage of a compromised validation path; it does not affect certificates already issued and does nothing if no record exists.
What CAA record can and cannot support
| It can support | It cannot support |
|---|---|
| A DNS record naming which certificate authorities may issue certificates for a domain. | An authority that is not listed must refuse, which limits the damage of a compromised validation path; it does not affect certificates already issued and does nothing if no record exists. |
Related terms in Security and privacy
Where an agent, a tool or a page can be turned against its operator, and the controls that limit the damage without proving safety.
Indirect prompt injection · Direct prompt injection · Jailbreak · Data exfiltration · Sensitive information disclosure · Secret leakage · Insecure output handling · Excessive agency · Least privilege · Trust boundary · Input validation · Output validation · Allowlist · Denylist · SSRF · RCE · Credential scope · OAuth scope · API key · Bearer token · mTLS · Rate-limit policy · Audit log · PII · Data minimization · Purpose limitation · Retention period · Data residency · Tenant isolation · Threat model · DMARC · DMARC alignment · SPF · DKIM · MTA-STS · TLS-RPT · DNSSEC · hard bounce
Questions about CAA record
What is CAA record?
A DNS record naming which certificate authorities may issue certificates for a domain.
What does CAA record not show or guarantee?
An authority that is not listed must refuse, which limits the damage of a compromised validation path; it does not affect certificates already issued and does nothing if no record exists.
Which area of the glossary does CAA record belong to?
Security and privacy: Where an agent, a tool or a page can be turned against its operator, and the controls that limit the damage without proving safety.
See it in the full glossary · 668 terms across 19 areas.