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Ten Years of Let's Encrypt: Announcing support from Jeff Atwood

https://letsencrypt.org/2025/03/18/community-of-funders/

Published: March 18, 2025 00:00

As we touched on in our first blog post highlighting ten years of Let’s Encrypt: Just as remarkable to us as the technical innovations behind proliferating TLS at scale is, so too is the sustained generosity we have benefited from throughout our first…

We Issued Our First Six Day Cert

https://letsencrypt.org/2025/02/20/first-short-lived-cert-issued/

Published: February 20, 2025 00:00

Earlier this year we announced our intention to introduce short-lived certificates with lifetimes of six days as an option for our subscribers. Yesterday we issued our first short-lived certificate. You can see the certificate at the bottom of our post, or…

Encryption for Everybody

https://letsencrypt.org/2025/02/14/encryption-for-everybody/

Published: February 14, 2025 00:00

2025 marks ten years of Let’s Encrypt. Already this year we’ve taken steps to continue to deliver on our values of user privacy, efficiency, and innovation, all with the intent of continuing to deliver free TLS certificates to as many people as possible;…

Scaling Our Rate Limits to Prepare for a Billion Active Certificates

https://letsencrypt.org/2025/01/30/scaling-rate-limits/

Published: January 30, 2025 00:00

Let’s Encrypt protects a vast portion of the Web by providing TLS certificates to over 550 million websites—a figure that has grown by 42% in the last year alone. We currently issue over 340,000 certificates per hour. To manage this immense traffic and…

Ending Support for Expiration Notification Emails

https://letsencrypt.org/2025/01/22/ending-expiration-emails/

Published: January 22, 2025 00:00

Since its inception, Let’s Encrypt has been sending expiration notification emails to subscribers that have provided an email address to us. We will be ending this service on June 4, 2025. The decision to end this service is the result of the following…

Announcing Six Day and IP Address Certificate Options in 2025

https://letsencrypt.org/2025/01/16/6-day-and-ip-certs/

Published: January 16, 2025 00:00

This year we will continue to pursue our commitment to improving the security of the Web PKI by introducing the option to get certificates with six-day lifetimes (“short-lived certificates”). We will also add support for IP addresses in addition to domain…

Announcing Certificate Profile Selection

https://letsencrypt.org/2025/01/09/acme-profiles/

Published: January 9, 2025 00:00

We are excited to announce a new extension to Let’s Encrypt’s implementation of the ACME protocol that we are calling “profile selection.” This new feature will allow site operators and ACME clients to opt in to the next evolution of Let’s Encrypt. As of…

A Note from our Executive Director

https://letsencrypt.org/2024/12/11/eoy-letter-2024/

Published: December 11, 2024 00:00

This letter was originally published in our 2024 Annual Report. The past year at ISRG has been a great one and I couldn’t be more proud of our staff, community, funders, and other partners that made it happen. Let’s Encrypt continues to thrive, serving…

Ending OCSP Support in 2025

https://letsencrypt.org/2024/12/05/ending-ocsp/

Published: December 5, 2024 00:00

Earlier this year we announced our intent to provide certificate revocation information exclusively via Certificate Revocation Lists (CRLs), ending support for providing certificate revocation information via the Online Certificate Status Protocol (OCSP).…

Intent to End OCSP Service

https://letsencrypt.org/2024/07/23/replacing-ocsp-with-crls.html

Published: July 23, 2024 00:00

Today we are announcing our intent to end Online Certificate Status Protocol (OCSP) support in favor of Certificate Revocation Lists (CRLs) as soon as possible. OCSP and CRLs are both mechanisms by which CAs can communicate certificate revocation…