At present, the “Percentage of Web Pages Loaded by Firefox Using HTTPS” graph is current. There is maintenance work underway and the “Let’s Encrypt Growth” and “Let’s Encrypt Certificates Issued Per Day” statistics are not up-to-date. We hope to have these graphs back up and running soon.
(14-day moving average, source: Firefox Telemetry)
Since the 2017-07-03 methodology change:
- ct-mapreduce ingests data from CT logs and produces statistics about Let’s Encrypt.
- HTTPS adoption comes from Mozilla’s Telemetry SSL Ratios dataset.