Ruin Explorer
Legend
If you're involved with IT at all you're likely to be familiar with the term.So I'm the only one who hasn't heard the term "zero day" before? I've heard of patient zero, but I think that's different.
This Netflix show needs George Clooney in it.
The precise meaning is a (serious) software vulnerability that is known to the developers but not yet patched, but the actual usage generally means any non-patched software vulnerability, regardless of whether the developers of the software know about it.
A "zero-day attack" or "zero-day exploit" is an attack/exploit developed in secrecy to utilize the unpatched vulnerability.
It's nice to look at George Clooney's face, honestly.