Donate $5 to support the launch of SGTJ with lifetime honor and unmatched gratitude.
Donate $5 to support the launch of SGTJ with lifetime honor and unmatched gratitude.
Lets Encrypt

Lets Encrypt

Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. It is a service provided by the Internet Security Research Group (ISRG). We give people the digital certificates they need in order to enable HTTPS (SSL/TLS) for websites, for free, in the most user-friendly way we can. We do this because we want to create a more secure and privacy-respecting Web.

Intent to End OCSP Service

Today we are announcing our intent to end Online Certificate Status Protocol (OC...

More Memory Safety for Let’s Encrypt: Deploying ntpd-rs

When we look at the general security posture of Let’s Encrypt, one of the things...

Let’s Encrypt Continues Partnership with Princeton to B...

Let’s Encrypt is proud to have been partnering with the Center for Information T...

Takeaways from Tailscale’s Adoption of ARI

Since March 2023, Let’s Encrypt has been improving our resiliency and reliabilit...

An Engineer’s Guide to Integrating ARI into Existing AC...

Following our previous post on the foundational benefits of ACME Renewal Informa...

Deploying Let's Encrypt's New Issuance Chains

Start from June 6th, 2024, Let's Encrypt will be switching issuance to its new i...

Introducing Sunlight, a CT implementation built for sca...

Let’s Encrypt is proud to introduce Sunlight, a new implementation of a C...

New Intermediate Certificates

On Wednesday, March 13, 2024, Let’s Encrypt generated 10 new Intermediate CA Key...

Increase your security governance with CAA

According to Cloudflare’s Merkle Town, 257,036 certificates are issued every hou...

Our role in supporting the nonprofit ecosystem

For more than ten years, we at the nonprofit Internet Security Research Group (I...

A Year-End Letter from Let’s Encrypt Vice President

Let’s Encrypt is supporting 40 million more websites than a year ago, bringing t...

Let's Encrypt - A Year-End Letter from Let’s Encrypt Ex...

Let's Encrypt - We can do a lot to improve security and privacy on the Internet ...

Let’s Encrypt Receives the Levchin Prize for Real-World...

On April 13, 2022, the Real World Crypto steering committee presented the Max Le...

TLS Beyond the Web: How MongoDB Uses Let’s Encrypt for ...

Most of the time, people think about using Let’s Encrypt certificates to encrypt...

Let’s Encrypt free SSL Certificate - Nurturing Continue...

Let’s Encrypt has been running a Certificate Transparency (CT) log since 2019 as...