为1.8亿个网站提供TLS证书的非盈利性证书颁发机构。

阅读我们的2019年度报告

博客文章

  • Standing on Our Own Two Feet

    When a new Certificate Authority (CA) comes on the scene, it faces a conundrum: In order to be useful to people, it needs its root certificate to be trusted by a wide variety of operating systems (OSes) and browsers. However, it can take years for the OSes and browsers to accept the new root certificate, and even longer for people to upgrade their devices to the newer versions that include that change.

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  • Let's Encrypt's New Root and Intermediate Certificates

    On Thursday, September 3rd, 2020, Let’s Encrypt issued six new certificates: one root, four intermediates, and one cross-sign. These new certificates are part of our larger plan to improve privacy on the web, by making ECDSA end-entity certificates widely available, and by making certificates smaller.

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  • Let's Encrypt Has Issued a Billion Certificates

    We issued our billionth certificate on February 27, 2020. We’re going to use this big round number as an opportunity to reflect on what has changed for us, and for the Internet, leading up to this event.

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