zero-day
Part of speech: adj
noun
Morphological type: simple
Topics: computing
engineering
mathematics
natural-sciences
physical-sciences
sciences
Inflected forms:
form: zero day
pos: adj
tags: alternative
form: 0-day
pos: adj
tags: alternative
form: zero-days
pos: noun
tags: plural
form: zero day
pos: noun
tags: alternative
form: 0-day
pos: noun
tags: alternative
Senses:
gloss: Of warez, released less than a day after the official product release.
pos: adj
tags: not-comparable
examples: Back then, having "zero day warez" (brand new cracked games that are not even one day old yet) on your BBS first was a big status symbol.
gloss: Of a vulnerability, newly discovered, and therefore still not fixed and possibly exploited by hackers or other criminals.
pos: adj
tags: not-comparable
examples: Although it's had tons of publicity, the IE zero-day vulnerability is so far only a real threat to people running IE6 on Windows XP, and you have to wonder about the competence of the companies actually affected by it[.]
Zero-day flaws are a burgeoning commercial field in the underground hacker economy where some gangs work to order for commercial or government clients which want to break into systems.
The company says Mythos has revealed thousands of so-called zero-day—previously undiscovered—cyber vulnerabilities in every operating system and web browser, some of them up to 27 years old.
gloss: 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.
pos: adj
tags: not-comparable
examples: If your software is popular and has a high demand, you will want to defend against the "zero-day" cracker.
2005, Valdes et al, Recent Advances in Intrusion Detection
Automatically creating reliable signatures of zero-day exploits is the focus of intense research efforts.
Before discussing ways to counter zero-day attacks, let's begin with the definition of what a zero-day attack is. A zero-day attack is one that the vendor does not yet know about or hasn't been fixed.
Yet again, Adobe’s Flash plugin has been hit by a “zero-day” exploit, meaning that even users with a fully up-to-date installation of the software are vulnerable to attacks.
gloss: Used other than figuratively or idiomatically: see zero, day.
pos: adj
tags: not-comparable
examples: Average residues of 1.44 and 2.18 mg/kg chlortetracycline were seen in liver and kidney, respectively, at zero-day withdrawal.
gloss: A vulnerability that has been discovered recently, and is yet unpatched or unmitigated; a zero-day vulnerability.
pos: noun
examples: New Internet Explorer zero-day exploited in Hong Kong attacks
America’s National Security Agency (NSA) spends upwards of $25m in a year buying previously undisclosed security vulnerabilities – known as zero days, because that’s the length of time the target has had to fix them – but the large investment may not result in as much of a collection of hacking capabilities as is widely assumed.
Plus: Cisco discloses a zero-day with no available patch, Venezuela accuses the US of a cyberattack, and more.
gloss: A day without obligations, where one does not worry about being productive.
pos: noun
examples: Whatever you do, do not cut out the “zero days” as suggested in Joel Snape’s article on productivity tips (Big, beautiful goals – but can’t be bothered? 11 great productivity tips for lazy people, 10 July). These are days where you have no obligations, where you do not worry about being productive.
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