1. zero day - Noun
2. zero day - Adjective
zero day (not comparable)
(computing) Alternative spelling of zero-day
zero day (plural zero days)
(computing) Alternative spelling of zero-day
(computing, idiomatic) (of vulnerability) newly discovered, and therefore still not fixed and possibly exploited by hackers or other criminals
(computing, idiomatic) (of exploit, its threat, or attack) benefiting from newly found and yet unpatched or unmitigated flaw in software or hardware; using zero-day vulnerability
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.
zero-day (plural zero-days)
(computing, idiomatic) vulnerability that has been discovered recently, and is yet unpatched or unmitigated; zero-day vulnerability
New Internet Explorer zero-day exploited in Hong Kong attacks
These days, however, more zero days are being used and discovered.
All the four zero-days originally were reported to Microsoft, affecting Internet Explorer on the desktop.
zero-day
A few days after releasing a security patch to fix it, Google on October 30 revealed that the zero-day CVE-2020-15999 was being exploited in conjunction with a windows zero-day vulnerability identified as CVE-2020-17087. Source: Internet
A critical zero-day vulnerability has been discovered in all versions of Apple's OS X operating system that allows hackers to exploi. Source: Internet
Advanced Threat Scan Engine detects advanced malware in Adobe PDF, MS Office, and other document formats using static and heuristic logic to detect known and zero-day exploits. Source: Internet
A few weeks ago, it was reported that the CIA was using a zero-day exploit which allowed attackers to issue commands that remotely executed malicious code. Source: Internet
The changelog of the update only has a passing mention that the zero-day bug was in V8 — an open-source JavaScript engine designed for Google Chrome and is also used by other Chromium browsers, such as Microsoft Edge and Opera. Source: Internet
Shane Huntley, Director of Google’s Threat Analysis Group, said the three iOS Zero-Days are related to the recent spat of three Chrome zero-days and a Windows zero-day that Google had previously disclosed over the past two weeks. Source: Internet