What is Issuer Identifier?
Issuer Identifier A unique value or distinguished name that identifies the Certificate Authority (CA) or entity that issues a digital certificate within a PKI, per X.509 and RFC 5280 standards.
Source: ISO 27001, NIST Cybersecurity Framework, MITRE ATT&CK
How is “Issuer Identifier” Used in Practice?
Each certificate contains an issuer identifier that allows systems to validate the certificate’s origin and build the trust chain.
Certification Exam Relevance
Who Needs to Know This Term?
- SOC Analysts
- Security Engineers
- Incident Responders
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What is Issuer Identifier?
A unique value or distinguished name that identifies the Certificate Authority (CA) or entity that issues a digital certificate within a PKI, per X.509 and RFC 5280 standards.
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