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 (电脑版, 手机版)

博客文章

  • 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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  • Multi-Perspective Validation Improves Domain Validation Security

    At Let’s Encrypt we’re always looking for ways to improve the security and integrity of the Web PKI. We’re proud to launch multi-perspective domain validation today because we believe it’s an important step forward for the domain validation process.

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