zero dayn.

Brit.

/ˈzɪərəʊ deɪ/, U.S.

/ˈzɪroʊ ˌdeɪ/,

/ˈziroʊ ˌdeɪ/

Forms: also (in sense 1) with capital initials.

Origin: Formed within English, by compounding. Etymons: zero n., day n.

Etymology: < zero n. + day n. With sense 1 compare slightly earlier zero hour n.

1. Military. The day on which a military operation is scheduled to begin. Also in extended use: the day on which any significant event or activity is scheduled to begin or take place. Cf. zero hour n. 1.

ΘΚΠ

society > armed hostility > attack > [noun] > time of attack

zero1849

zero day1917

Z-day1925

the world > time > particular time > [noun] > an appointed or fixed time, day, or date > for something to begin or be released

release date1904

effective date1909

zero hour1915

zero day1917

start date1920

countdown1953

T1959

the world > time > period > a day or twenty-four hours > [noun] > day on which something is scheduled to begin

opening day1798

magazine-day1821

first1868

zero day1917

1917 Attack Brit. 9th Corps Messines Ridge (U.S. War Dept. Doc. No. 653) 12 The assault, which will be preceded by a five days' artillery bombardment, will take place about dawn on Zero day.

1947 L. Hastings Dragons are Extra iv. 80 I..fixed a zero-day three months ahead.

1952 Financial Times 30 June 3/2 Stilfontein's zero day is Tuesday next, when the mine will officially be producing gold.

1978 R. V. Jones Most Secret War xxxix. 350 20th October had been fixed as Zero Day for rocket attacks on London to begin.

2007 P. D. Dickson Thoroughly Canad. Gen. iii. 53 Working parties had filled in shell craters and bridged trenches in order to have roads built as far as the front line by zero day.

2. Computing.

a. attributive. Designating (an item of) commercial software, media, etc., illegally made available via the internet on the same day as (or sometimes earlier than) its official release. Chiefly in zero day warez (see warez n.).

ΚΠ

1992 Sydney Morning Herald (Nexis) 28 Sept. 18 The target for all these groups was ‘zero wares’, software that had been cracked less than 24 hours earlier—zero days.]

1993 Goal! Piracy in comp.sys.amiga.advocacy (Usenet newsgroup) 28 June There was talk in this group about zero day warez.

2004 What Crap is This? in comp.os.linux.advocacy (Usenet newsgroup) 24 July Zero Day cracks appear even before the products have been released.

2017 @MCWronski 19 Sept. in twitter.com (O.E.D. Archive) Oh that kind of pirate. I was going to bring up BitTorrent and zero day warez.

b. attributive. Designating a software vulnerability that is unknown to the developer or vendor, making it vulnerable to an attack until it is discovered and fixed; designating an attack or method of attack which exploits such a vulnerability.

ΚΠ

2000 ‘We're the Good Guys’ claim Hackers in alt.hit2000.nl (Usenet newsgroup) 14 Apr. The so-called zero day exploit list..features a minimum of 100 fresh vulnerabilities a week.

2006 InfoWorld 30 Oct. 26/1 The attacks..use phishing e-mails to get employees to open e-mail attachments or visit Web sites that download Trojans targeting ‘zero-day’ vulnerabilities in common apps.

2017 Times (Nexis) 16 June 16 The breach could be the result of a so-called zero-day attack, one that exploits a flaw in software not identified or patched by the supplier.

This entry has been updated (OED Third Edition, June 2018; most recently modified version published online March 2022).

单词	zero day
释义	zero dayn. Brit. /ˈzɪərəʊ deɪ/, U.S. /ˈzɪroʊ ˌdeɪ/, /ˈziroʊ ˌdeɪ/ Forms: also (in sense 1) with capital initials. Origin: Formed within English, by compounding. Etymons: zero n., day n. Etymology: < zero n. + day n. With sense 1 compare slightly earlier zero hour n. 1. Military. The day on which a military operation is scheduled to begin. Also in extended use: the day on which any significant event or activity is scheduled to begin or take place. Cf. zero hour n. 1. ΘΚΠ society > armed hostility > attack > [noun] > time of attack zero1849 zero day1917 Z-day1925 the world > time > particular time > [noun] > an appointed or fixed time, day, or date > for something to begin or be released release date1904 effective date1909 zero hour1915 zero day1917 start date1920 countdown1953 T1959 the world > time > period > a day or twenty-four hours > [noun] > day on which something is scheduled to begin opening day1798 magazine-day1821 first1868 zero day1917 1917 Attack Brit. 9th Corps Messines Ridge (U.S. War Dept. Doc. No. 653) 12 The assault, which will be preceded by a five days' artillery bombardment, will take place about dawn on Zero day. 1947 L. Hastings Dragons are Extra iv. 80 I..fixed a zero-day three months ahead. 1952 Financial Times 30 June 3/2 Stilfontein's zero day is Tuesday next, when the mine will officially be producing gold. 1978 R. V. Jones Most Secret War xxxix. 350 20th October had been fixed as Zero Day for rocket attacks on London to begin. 2007 P. D. Dickson Thoroughly Canad. Gen. iii. 53 Working parties had filled in shell craters and bridged trenches in order to have roads built as far as the front line by zero day. 2. Computing. a. attributive. Designating (an item of) commercial software, media, etc., illegally made available via the internet on the same day as (or sometimes earlier than) its official release. Chiefly in zero day warez (see warez n.). ΚΠ 1992 Sydney Morning Herald (Nexis) 28 Sept. 18 The target for all these groups was ‘zero wares’, software that had been cracked less than 24 hours earlier—zero days.] 1993 Goal! Piracy in comp.sys.amiga.advocacy (Usenet newsgroup) 28 June There was talk in this group about zero day warez. 2004 What Crap is This? in comp.os.linux.advocacy (Usenet newsgroup) 24 July Zero Day cracks appear even before the products have been released. 2017 @MCWronski 19 Sept. in twitter.com (O.E.D. Archive) Oh that kind of pirate. I was going to bring up BitTorrent and zero day warez. b. attributive. Designating a software vulnerability that is unknown to the developer or vendor, making it vulnerable to an attack until it is discovered and fixed; designating an attack or method of attack which exploits such a vulnerability. ΚΠ 2000 ‘We're the Good Guys’ claim Hackers in alt.hit2000.nl (Usenet newsgroup) 14 Apr. The so-called zero day exploit list..features a minimum of 100 fresh vulnerabilities a week. 2006 InfoWorld 30 Oct. 26/1 The attacks..use phishing e-mails to get employees to open e-mail attachments or visit Web sites that download Trojans targeting ‘zero-day’ vulnerabilities in common apps. 2017 Times (Nexis) 16 June 16 The breach could be the result of a so-called zero-day attack, one that exploits a flaw in software not identified or patched by the supplier. This entry has been updated (OED Third Edition, June 2018; most recently modified version published online March 2022). < n.1917
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