"You are correct, private roots do not have to be under 398 days, but they do have to be under 825 days."
I think this is means to say "private SSL certificates" (in many self-signed scenarios the SSL certificate IS the root, but it doesn't need to be this way and the roots can be as long as you like as long as you use a proper chain, e.g. https://stackoverflow.com/questions/44550970).
Topic:
Privacy & Security
SubTopic:
General
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