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Let's Encrypt Announces New-Certificate-Every-6-Days Offering
(letsencrypt.org)
This is a most excellent place for technology news and articles.
I volunteer to help with IT at a makerspace, and I hesitate to go for 6 day expiration times. As volunteers, we can't always fix problems in a timely way like paid IT staff could. We try to automate the hell out of everything, but certs have gone a day or two without getting updated before.