Let’s Encrypt Continues Partnership with Princeton to Bolster Internet Security
Let’s Encrypt is proud to have been partnering with the Center for Information Technology Policy team at Princeton University since 2018 to bolster defenses...
Takeaways from Tailscale’s Adoption of ARI
Since March 2023, Let’s Encrypt has been improving our resiliency and reliability via ACME Renewal Information (ARI). ARI makes it possible for our Subscribers...
Darryl Peek on working for the public sector at Elastic
Darryl’s family has a long history of military service and Darryl himself has always supported the public sector — his career has taken him...
An Engineer’s Guide to Integrating ARI into Existing ACME Clients
Following our previous post on the foundational benefits of ACME Renewal Information (ARI), this one offers a detailed technical guide for incorporating ARI into...
Optimizing cloud resource costs with Elastic Observability and Tines
How can cloud engineers optimize resource costs using Elastic Observability and Tines? Follow this step-by-step guide to learn how to integrate Elastic Observability with...
Deploying Let’s Encrypt’s New Issuance Chains
On Thursday, June 6th, 2024, we will be switching issuance to use our new intermediate certificates. Simultaneously, we are removing the DST Root CA...
Sensor Intel Series: Top CVEs in February 2024
27 new CVEs, and continued IoT targeting. See what's new from February 2024. - Read more
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...
Introducing Sunlight, a CT implementation built for scalability, ease of operation, and reduced cost
Let’s Encrypt is proud to introduce Sunlight, a new implementation of a Certificate Transparency log that we built from the ground up with...
Khalil Corbin on how the arts helped shape him — and led to his...
Before joining Elastic, Khalil Corbin worked in the public sector, doing non-profit work with kids on probation — and writing for music blogs on...
Latest article
Sysco – 2,691,852 breached accounts
In June 2026, the food distribution company Sysco was targeted by a ShinyHunters "pay or leak" extortion campaign. Data was subsequently published containing 2.7M...
CVE-2023-6606 Kernel: out-of-bounds read vulnerability in smbcalcsize
Information published. - Read more
Anthropic Confirms Claude Mythos 5 Redeployment for US Critical Infrastructure Organizations
Anthropic has confirmed that Claude Mythos 5, its most powerful AI cybersecurity model, will be redeployed to a select set of U.S. organizations responsible...
Chromium: CVE-2026-13027 Use after free in FileSystem
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see (https://chromereleases.googleblog.com/2025) for more information. - Read...
