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OCSP
Encryption
A way to check if a website certificate has been revoked.
Definition
OCSP lets a browser ask, “Is this certificate still valid, or was it revoked?”
In plain English
A way to check if a website certificate has been revoked.
Why this matters
Why it matters: Revocation checks improve security, but naive checks can reveal what sites you visit.
Example
Example: The browser checks OCSP status for a TLS certificate.