Let's Encrypt

@lets_encrypt@robot.villas

News and engineering updates from Let's Encrypt, the free, automated certificate authority operated by the Internet Security Research Group.

Source: https://letsencrypt.org/feed.xml

Homepage: https://letsencrypt.org

Posts

100

Posts

64-Day Certificate Lifetimes Coming Feb 2027 #Security #Automation #Web
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Oct 7, 2026
How We Built a Data Warehouse Using ClickHouse #DataEngineering #Cloud #Tech
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Sep 17, 2026
Going Back to Our Roots: A Little Piece of Let's Encrypt History #Security #OpenSource #History
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Aug 11, 2026
A Post-Quantum Future for Let's Encrypt #Security #Cryptography #OpenSource
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Jun 3, 2026
The difficulty of making sure your website is broken #Security #WebDev #Automation
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Apr 10, 2026
Simplifying Certificate Renewals for Millions of Domains with ACME Renewal Information (ARI) #Security #Automation #WebDev
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Mar 17, 2026
Six-Day and IP Address Certificates Available in Certbot #Security #Certificates #OpenSource
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Mar 11, 2026
Shorter Certificate Lifetimes and Rate Limits #Security #Web #Automation
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Feb 24, 2026
DNS-PERSIST-01: A New Model for DNS-based Challenge Validation #Security #Automation #Internet
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Feb 18, 2026
On the Importance of "Hello" and "Thanks" #Security #OpenSource #Community
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Feb 5, 2026
6-day and IP Address Certificates are Generally Available #Security #Certificates #Networking
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Jan 15, 2026
A Note from our Executive Director #Security #OpenSource #Community
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Dec 29, 2025
10 Years of Let's Encrypt Certificates #Security #OpenSource #Web
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Dec 9, 2025
Decreasing Certificate Lifetimes to 45 Days #Security #Automation #Web
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Dec 2, 2025
New "Generation Y" Hierarchy of Root and Intermediate Certificates #Security #Certificates #Web
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Nov 24, 2025
Ten Years of Community Support #Community #Security #OpenSource
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Oct 7, 2025
ACME Renewal Information (ARI) Published as RFC 9773 #Security #OpenSource #Web
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Sep 16, 2025
Native ACME Support Comes to NGINX #Security #OpenSource #WebInfra
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Sep 11, 2025
End of Life Plan for RFC 6962 Certificate Transparency Logs #Security #Encryption #Internet
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Aug 14, 2025
OCSP Service Has Reached End of Life #Security #Automation #Internet
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Aug 6, 2025
We've Issued Our First IP Address Certificate #Security #Networking #Certificates
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Jul 1, 2025
Expiration Notification Service Has Ended #Security #Automation #Internet
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Jun 26, 2025
Reflections on a Year of Sunlight #Security #Privacy #OpenSource
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Jun 11, 2025
How We Reduced the Impact of Zombie Clients #Security #OpenSource #Tech
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Jun 4, 2025
Sustaining a More Secure Internet: The Power of Recurring Donations #Security #OpenSource #Donations
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May 21, 2025
Ending TLS Client Authentication Certificate Support in 2026 #Security #Encryption #Networking
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May 14, 2025
How Pebble Supports ACME Client Developers #Security #OpenSource #WebDev
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Apr 30, 2025
Ten Years of Let's Encrypt: Announcing support from Jeff Atwood #Security #OpenSource #Community
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Mar 18, 2025
We Issued Our First Six Day Cert #Security #Automation #Web
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Feb 20, 2025
Encryption for Everybody #Security #Encryption #Privacy
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Feb 14, 2025
Scaling Our Rate Limits to Prepare for a Billion Active Certificates #Security #Automation #Internet
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Jan 30, 2025
Ending Support for Expiration Notification Emails #Security #Automation #Web
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Jan 22, 2025
Announcing Six Day and IP Address Certificate Options in 2025 #Security #Certificates #WebInfra
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Jan 16, 2025
Announcing Certificate Profile Selection #Security #OpenSource #Web
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Jan 9, 2025
A Note from our Executive Director #Security #Internet #OpenSource
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Dec 11, 2024
Ending OCSP Support in 2025 #Security #Automation #Web
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Dec 5, 2024
Intent to End OCSP Service #Security #Internet #Automation
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Jul 23, 2024
More Memory Safety for Let's Encrypt: Deploying ntpd-rs #Security #OpenSource #Technology
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Jun 24, 2024
Let's Encrypt Continues Partnership with Princeton to Bolster Internet Security #Security #OpenSource #Internet
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May 30, 2024
Takeaways from Tailscale's Adoption of ARI #Security #OpenSource #WebDev
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May 1, 2024