https://ubuntu.com/server/docs/explanation/security/certificates/
About certificates - Ubuntu Server documentation
Learn about digital certificates, certificate authorities, and how they secure communication in Ubuntu Server environments.
ubuntu server documentationabout certificates
https://www.computerworld.com/article/4018233/google-finally-gets-strict-about-web-server-certificates.html
Google finally gets strict about web server certificates – Computerworld
Jul 9, 2025 - The Web cert world has undergone a lot of change this year, and Google has now set a June 2026 deadline for being even stricter about which certificates can be...
web servergooglefinallygetsstrict