Articles
CAA Records Explained: Control Which CAs Can Issue Your Certificates
From September 8, every certificate authority must check CAA records before issuing. What CAA is, the syntax, and how to add it without breaking anything.
SHA-1 Certificates Stop Working in January: Check Yours Now
Chrome and Firefox plan to stop trusting SHA-1 certificates early in 2017. How to find any that are still in your chains, and what replacing them involves.
Let's Encrypt Is Out of Beta: Free HTTPS for Everyone, and a New Way to Fail
Let's Encrypt has left beta after issuing over a million free certificates. How ACME works, a basic nginx setup, and the silent renewal failure to watch for.
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