Important: Let’s Encrypt will be revoking 3,048,289 TLS certificates tomorrow. To find out if your site is affected and what to do, see https://community.letsencrypt.org/t/revoking-certain-certificates-on-march-4/114864
From https://www.theregister.co.uk/2020/03/03/lets_encrypt_cert_revocation/ :
"The proximate cause of the bug was a common mistake in Go: taking a reference to a loop iterator variable," explained Hoffman-Andrews in the bug report.
Well, at least it wasn't a security vulnerability.
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