He claims that a zero-day vulnerability is found in every version of Internet Explorer for any version of Windows and allows hackers to hijack any cookie for any website.

他指出在windows平台所有版本的ie浏览器中都存在该零天攻击漏洞，该漏洞使黑客们可以窃取任何网站留下的cookie。

youdao

It is known as a "zero-day" vulnerability because, effectively, it has been there since the product was launched - day zero - and not even its developer had spotted it.

该漏洞被称为“零日”漏洞，因为这一漏洞自从产品推出以来就一直存在——从第“零天”开始就存在，甚至连开发人员都没有发现过。

youdao

This vulnerability is published as a zero-day threat.

此漏洞作为零日威胁(zero - day threat)被公布。

youdao

Hackers infected banner ads run by marketing firms such as Germany's Falk Esolutions, causing users who visited certain Web sites displaying Falk ads to download a Trojan horse that steals credit card numbers by exploiting yet another undetected vulnerability in Microsoft's Internet Explorer (a zero-day attack, once again).

FORBES: Criminal Outbreak