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We’re excited that Squarespace has decided to protect the millions of sites they host with HTTPS! While talking with their team we learned they were deploying OCSP Stapling from the get-go, and we were impressed. We asked them to share their experience with our readers in our first guest blog post (hopefully more to come). - Josh Aas, Executive Director, ISRG / Let’s Encrypt OCSP stapling is an al
First reported Oct 24, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Let’s Encrypt has reached a milestone: we’ve now issued more than 100,000,000 certificates. This number reflects at least a few things: First, it illustrates the strong demand for our services. We’d like to thank all of the sysadmins, web developers, and everyone else managing servers for prioritizing protecting your visitors with HTTPS. Second, it illustrates our ability to scale. I’m incredibly
First reported Jun 28, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Our goal with Let’s Encrypt is to get the Web to 100% HTTPS. We’d like to give a quick progress update. Let’s Encrypt has issued more than 5 million certificates in total since we launched to the general public on December 3, 2015. Approximately 3.8 million of those are active, meaning unexpired and unrevoked. Our active certificates cover more than 7 million unique domains. A couple of different
First reported Jun 22, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
It has long been a dream of ours for there to be a standardized protocol for certificate issuance and management. That dream has become a reality now that the IETF has standardized the ACME protocol as RFC 8555. I’d like to thank everyone involved in that effort, including Let’s Encrypt staff and other IETF contributors. Having a standardized protocol for certificate issuance and management is imp
First reported Mar 11, 2019 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Update, March 13, 2018 Wildcard certificate support is live. Let’s Encrypt will begin issuing wildcard certificates in January of 2018. Wildcard certificates are a commonly requested feature and we understand that there are some use cases where they make HTTPS deployment easier. Our hope is that offering wildcards will help to accelerate the Web’s progress towards 100% HTTPS. Let’s Encrypt is curr
First reported Jul 06, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
As of the end of July 2018, the Let’s Encrypt root, ISRG Root X1, is directly trusted by Microsoft products. Our root is now trusted by all major root programs, including Microsoft, Google, Apple, Mozilla, Oracle, and Blackberry. Today’s announcement that we’re trusted by all major root programs represents a major milestone for us, but it’s not the conclusion of our journey towards being directly
First reported Aug 06, 2018 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
We’re pleased to announce that OVH has renewed their support for Let’s Encrypt as a Platinum sponsor for the next three years. OVH’s strong support for Let’s Encrypt will go a long way towards creating a more secure and privacy-respecting Web. OVH initially got in touch with Let’s Encrypt to become a Platinum sponsor shortly after our public launch in December of 2015. It was clear that they under
First reported Mar 23, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Let’s Encrypt is leaving beta today. We’re also excited to announce that founding sponsors Cisco and Akamai have renewed their Platinum sponsorships with 3-year commitments, Gemalto is joining as our newest Gold sponsor, and HP Enterprise, Fastly, Duda and ReliableSite.net are our newest Silver sponsors. Since our beta began in September 2015 we’ve issued more than 1.7 million certificates for mor
First reported Apr 12, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Let’s Encrypt is happy to announce full support for IPv6. As IPv4 address space is exhausted, more and more people are deploying services that are only reachable via IPv6. Adding full support for IPv6 allows us to serve more people and organizations, which is important if we’re going to encrypt the entire Web. IPv6 is an exciting step forward which will allow the Internet to grow and reach more pe
First reported Jul 26, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Let’s Encrypt recently launched SCT embedding in certificates. This feature allows browsers to check that a certificate was submitted to a Certificate Transparency log. As part of the launch, we did a thorough review that the encoding of Signed Certificate Timestamps (SCTs) in our certificates matches the relevant specifications. In this post, I’ll dive into the details. You’ll learn more about X.
First reported Apr 04, 2018 16:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Let’s Encrypt is pleased to introduce support for issuing certificates that contain Internationalized Domain Names (IDNs). This means that our users around the world can now get free Let’s Encrypt certificates for domains containing characters outside of the ASCII set, which is built primarily for the English language. We’re excited about this feature because our goal is to serve the entire Web, i
First reported Oct 21, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Update, April 27, 2018 ACME v2 and wildcard support have been fully available since March 13, 2018. Update, January 4, 2018 We introduced a public test API endpoint for the ACME v2 protocol and wildcard support on January 4, 2018. ACME v2 and wildcard support will be fully available on February 27, 2018. Let’s Encrypt will add support for the IETF-standardized ACME v2 protocol in January of 2018.
First reported Jun 14, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
We’re excited that support for getting and managing TLS certificates via the ACME protocol is coming to the Apache HTTP Server Project (httpd). ACME is the protocol used by Let’s Encrypt, and hopefully other Certificate Authorities in the future. We anticipate this feature will significantly aid the adoption of HTTPS for new and existing websites. We created Let’s Encrypt in order to make getting
First reported Oct 17, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
The trust of our users is ISRG’s most critical asset. Transparency regarding legal requests is an important part of making sure our users can trust us, and to that end we will be publishing reports twice annually. Reports will be published three months after the period covered in order to allow us time to research all requests and orders received during the period. Download Legal Transparency Repo
First reported Oct 01, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Let’s Encrypt had a great year in 2018. We’re now serving more than 150 million websites while maintaining a stellar security and compliance track record. Most importantly though, the Web went from 67% encrypted page loads to 77% in 2018, according to statistics from Mozilla. This is an incredible rate of change! We’d like to thank all of the people and organizations who worked hard to create a mo
First reported Dec 31, 2018 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Our first full year as a live CA was an exciting one. I’m incredibly proud of what our team and community accomplished during 2016. I’d like to share some thoughts about how we’ve changed, what we’ve accomplished, and what we’ve learned. At the start of 2016, Let’s Encrypt certificates had been available to the public for less than a month and we were supporting approximately 240,000 active (unexp
First reported Jan 06, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
We are proud to announce that The Ford Foundation has awarded us a grant to help our growing operations. The Ford Foundation is a major philanthropic entity both in the US and globally. One of its programmatic areas, Internet Freedom, is focused on creating a more open and inclusive Internet experience for all people. Our relationship with Ford was born out of this mutual desire. According to Mich
First reported Oct 27, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
The Let’s Encrypt root key (ISRG Root X1) will be trusted by default in Firefox 50, which is scheduled to ship in Q4 2016. Acceptance into the Mozilla root program is a major milestone as we aim to rely on our own root for trust and have greater independence as a certificate authority (CA). Public CAs need their certificates to be trusted by browsers and devices. CAs that want to issue independent
First reported Aug 05, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
Today we kicked off our first crowdfunding campaign with the goal of raising enough funds to cover about one month of our operations - $200,000. That amount covers the operational and engineering staff, the hardware and the software, and general operating expenses needed to securely and reliably issue and manage many millions of certificates. We decided to run a crowdfunding campaign for a couple
First reported Nov 01, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:55 UTCOpen evidence record
A filename, label, or report mention alone does not establish maliciousness. Observation dates describe cited sources; collection dates describe this local metadata catalog. No malware samples are stored, fetched, or executed by these pages.