# \#tls

**URL:** https://scanalyst.fourmilab.ch/tag/tls/842.md

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## [Fourmilab.ch Migrates to Let's Encrypt Security Certificate](https://scanalyst.fourmilab.ch/t/fourmilab-ch-migrates-to-lets-encrypt-security-certificate/625)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 1\
**Last updated:** [24 December 2021 20:52 UTC](https://scanalyst.fourmilab.ch/t/fourmilab-ch-migrates-to-lets-encrypt-security-certificate/625 "2021-12-24T20:52:07Z")

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Fourmilab’s security certificate, used in establishing https: connections to the site, was set to expire on 2022-01-04. Security certificates have always been a dodgy business: charging large amounts of money for random…