Simon Willison’s Weblog

SSL Issuer Popularity. The impressive growth of Let’s Encrypt in one graph: from 4.87% of TLS-enabled domains in May 2016 to 36.68% in November 2017.

Posted 21st November 2017 at 2:44 pm

Recent articles

Introducing gisthost.github.io - 1st January 2026
2025: The year in LLMs - 31st December 2025
How Rob Pike got spammed with an AI slop "act of kindness" - 26th December 2025

domains 21 ssl 9

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe