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Let's Encrypt Blog

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Let's Encrypt is a free, automated, and open Certificate Authority brought to you by the nonprofit Internet Security Research Group (ISRG). Read all about our work in our Annual Report.

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Visit letsencrypt.org → RSS feedOn Hacker News Jun 2015 – Jun 2026

Security & Privacy 49Infrastructure & DevOps 34Tech Industry & Business 7Open Source 2Networking & Internet 2Web & Frontend 1

31

New Intermediate Certificates

On Wednesday, March 13, 2024, Let’s Encrypt generated 10 new Intermediate CA Key Pairs, and issued 15 new Intermediate CA Certificates containing the new public keys. These new intermediate certificates provide smaller and more efficient certificate chains to Let’s Encrypt Subscribers, enhancing the overall online…

32

Oak, a Free and Open Certificate Transparency Log

Update: Feb. 5 2020 The Let’s Encrypt CT logs are now included in approved log lists and are usable by all publicly-trusted certificate authorities. Today we are announcing a new Certificate Transparency log called Oak. The Oak log will be operated by Let’s Encrypt and all publicly trusted certificate authorities will…

33

Reliability via Automated Renewal Information

The Let’s Encrypt team is excited to announce that ACME Renewal Information (ARI) is live in production! ARI makes it possible for our subscribers to handle certificate revocation and renewal as easily and automatically as the process of getting a certificate in the first place. With ARI, Let’s Encrypt can signal to…

34

A New Life for Certificate Revocation Lists

This month, Let’s Encrypt is turning on new infrastructure to support revoking certificates via Certificate Revocation Lists. Despite having been largely supplanted by the Online Certificate Status Protocol for over a decade now, CRLs are gaining new life with recent browser updates. By collecting and summarizing CRLs…