How Big is Let's Encrypt - it's getting bigger

Server
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I have dug into our KeyChest.net database and pulled some interesting stats about a set of about 500,000 certificates. Here’s two things that I found interesting:

  • Let’s Encrypt seems to be steadily growing - data from server audits (i.e., what certificates are actually installed); it grew from 33% to 38% in less than 18 months
  • COMODO is the only real contender in terms of the number of issued certificates - 19% and that’s largely due to CDNs using it

You can also compare the number of 33% of servers using Let’s Encrypt to the number of 52%, which is a proportion of LE certificates in CT logs (= all issued certificates).

You can read more details on my blog:

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I guess that the growing market share of Let’s Encrypt opens a number of opportunities, for example issuing and selling premium SSL certificates, data analytics and others that come with the increasing influence in the Web security industry.

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I'd love to see what the market looks like in 5 years' time. I believe that CT logs are potentially another big driver for disruption. At least we use it massively in KeyChest to find new certificates.

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