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The State of CRLs Today

Certificate Revocation Lists (CRLs) are a way for Certificate Authorities to announce to their relying parties (e.g., users validating the certificates) that a Certificate they issued should no longer be trusted. E.g., was revoked.… [read more]

Published 2017-08-18

Cutting over Let's Encrypt's Statistics to Map/Reduce

We're changing the methodology used to calculate the Let's Encrypt Statistics page, primarily to better cope with the growth of Let's Encrypt. Over the past several months it's become clear that the existing methodology is less accurate than we had e… [read more]

Published 2017-07-10

Analyzing Let's Encrypt statistics via Map/Reduce

I've been supplying the statistics for Let's Encrypt since they've launched. In Q4 of 2016 their volume of certificates exceeded the ability of my database server to cope, and I moved it to an Amazon RDS instance.… [read more]

Published 2017-05-16