What is Root Authority?
Root Authority The top-level Certificate Authority (CA) in a PKI hierarchy whose root certificate is self-signed and serves as the ultimate trust anchor for all certificates issued in the infrastructure.
Source: ISO 27001, NIST Cybersecurity Framework, MITRE ATT&CK
How is “Root Authority” Used in Practice?
All subordinate certificate authorities derive their trust from the root authority, whose key must be protected against compromise.
Certification Exam Relevance
Who Needs to Know This Term?
- SOC Analysts
- Security Engineers
- Incident Responders
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What is Root Authority?
The top-level Certificate Authority (CA) in a PKI hierarchy whose root certificate is self-signed and serves as the ultimate trust anchor for all certificates issued in the infrastructure.
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