Let's Encrypt cuts certificate lifetimes to 64 days starting February 2027
Let's Encrypt is continuing a push toward tighter security by reducing free SSL/TLS certificate lifetimes from 90 days to 64 days, starting February 10, 2027. For administrators already implementing modern ACME clients that support ARI (ACME Renewal Information), the change should be seamless.
Summary from Ars Technica Security.
Explained
The technology and terms in this story. Learn more
- ProtocolTLS · Transport Layer SecurityThe encryption protocol behind HTTPS: it keeps traffic between two programs private and proves who the server is.
- ProtocolSSL · Secure Sockets LayerThe retired predecessor of TLS; the name lives on in product names such as OpenSSL and "SSL VPN".
- ConceptCertificate authorityAn organisation trusted to vouch for a website's identity by signing its certificate.