Let's Encrypt cuts certificate lifetimes to 64 days starting February 2027

TLS certificates prove a website's identity and set up the encrypted connection your browser uses; the shorter they last, the less useful a stolen key is to an attacker. Let's Encrypt will cut its free certificates from 90 days to 64 days on February 10, 2027, and to 45 days in 2028, so admins should move to automated renewal.

Summary written with AI by HowTechMoves, based on reporting by Ars Technica.