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to lift along with this topic..

the origin of 0-day (zero-day): http://bjorn.kuiper.nu/2013/10/09/origin_of_zero_day/

curious to see if somebody knows (with proof) of an earlier reference..

I don't really have a proper proof but I'm pretty sure I saw the term used back in the BBS days. Here's one such reference allegedly from 1994 https://defacto2.net/f/ac2a9c "0 day AMIGA / PC / CONSOLE / C64".

They do say in that article that 0-day came from warez scene citing Wikipedia. Here's some text from an Amiga demo dated early 1992 that uses the term "0-day warez" : http://janeway.exotica.org.uk/file.php?id=94232

the article refers to "The origin of 0-day (zero-day) in hacking (etymology of zero-day)". Thus not the warez scene. It was taken from the warez scene by the hackers scene, but the interest is in when the first reference was used within the hackers scene for so-called exploits that haven't made the public yet or are so new that they are still referred to as 0-days.

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