The EFF's 'Certbot' Now Supports Six-Day Certs

10 years ago "certificate authorities normally issued certificate lifetimes lasting a year or more," remembers a new blog post Thursday by the EFF's engineering director. So in 2015 when the free cert authority Let's Encrypt first started issuing 90-day TLS certificates for websites, "it was considered a bold move, that helped push the ecosystem towards shorter certificate life times."
And then this January Let's Encrypt announced new six-day certificates...
This week saw a related announcement