Unauthorized Certificate Issued for Domain

My domain is: thegraph.com

You will need to provide more details.

But, I can make a guess ...

Right now your domain has a cert issued by Cloudflare Inc. And, if you previously tried to proxy your DNS with Cloudflare it may get a Let's Encrypt cert for you. Cloudflare also has a system to warn when certs get issued and it may even warn you about this.

Why do you think an "unauthorized cert" was issued?

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Yes to all of the above. We will take it up with CF. None of the domains listed with ours are at all associated. Thanks for your help.

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CF is a CDN/hosting service.
As such, they will host many domains from the same system.
It makes sense for them to combine domains [they host] onto a single cert.
[every hosting company does this]

What exactly did they issue that you feel was not correct?

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Cloudflare will often bundle the domains from different clients together. They've been doing it less and less, but they do it. You must purchase a SSL from them or an advanced plan to ensure control of how they process certificates. I think under most options they will still add one of their internal domains onto the certificate to get around some deployment issues.

I think they stopped using the multiple-clients certificates in production and only use them for backup certificates. Last year, they announced "Backup Certificates" (Introducing: Backup Certificates) so they can maintain SSL in case of a mass CA revocation or a root being revoked. I think those still combine clients. It's just a stopgap measure, and I don't think it's been utilized yet. They basically grab certs from a second CA / root and keep them shelved unless needed. This way they don't need to somehow instantly order tens of thousands of certificates in a worst-case-scenario..

See

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Thank you so much!! Super useful to know.

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