Continuous Assurance: Security & Facilities Watchdogsintermediate · ~100 min

The Certificate You Never Ordered — Watch the Public Logs for Every Name You Own

If someone obtained a valid certificate for one of your domain names tonight, how would you find out?

Every publicly-trusted certificate has to be written into a public, append-only log before a browser will trust it — which means the record already exists, minutes after issuance, for every name you own. This project makes you the person reading it, instead of hoping nobody else is.

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What you'll do

A daily watch you built with Claude Code that reads the public certificate-transparency record for every domain you own, keeps its place with a saved cursor so it only ever reports what is new, and grades each new certificate against a written policy you approved — OK, REVIEW, VIOLATION, or an honest UNKNOWN when it could not check — plus a published CAA record naming the only certificate authorities allowed to issue for you, and a runbook for the morning something unexpected actually appears.