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cloud.google.com·6h ago
Security
Cloudflare Blog·Aug 13·5 min read
Certificate Transparency Monitoring is now generally available
TL;DR
Cloudflare's Certificate Transparency Monitoring is now generally available, filtering out routine certificate renewals to reduce alert noise. Users will now receive alerts only for unexpected certificates not issued by Cloudflare.
✦ Why It Matters
Enable Certificate Transparency Monitoring to receive only relevant alerts about unexpected certificate issuances.
Key Takeaways
- Turn on Certificate Transparency Monitoring in your Cloudflare dashboard.
- Review alerts for unexpected certificates outside Cloudflare's management.
- Utilize the new filtering feature to reduce alert noise.
- Provide feedback on feature improvements through Cloudflare Community.
How It Works
Cloudflare's filtering mechanism uses the SHA-256 hash of the public key as a unique identifier for certificates. This identifier is recorded early in the certificate lifecycle, allowing the alerting service to determine if a certificate was issued by Cloudflare.
If a match is found, the alert is suppressed; if not, the user is notified.