zero-day
Of warez, released less than a day after the official product releaseOf warez, released less than a day after the official product release.
Meaning
4 senses(not comparable)Of warez, released less than a day after the official product release.
(not comparable)Of a vulnerability, newly discovered, and therefore still not fixed and possibly exploited by hackers or other criminals.
(not comparable)Of an exploit or its threat or an attack, benefiting from a newly found and yet unpatched or unmitigated flaw in software or hardware; using a zero-day vulnerability.
2005, Valdes et al, Recent Advances in Intrusion Detection Automatically creating reliable signatures of zero-day exploits is the focus of intense research efforts.
(not comparable)Used other than figuratively or idiomatically: see zero, day.
Average residues of 1.44 and 2.18 mg/kg chlortetracycline were seen in liver and kidney, respectively, at zero-day withdrawal.