It's a sunny late winter day, just a few degrees above zero.

这是晚冬晴朗的一天，只有零上几度。

《柯林斯英汉双解大词典》

One had to quit abruptly on a given day, going from about a pack a day to zero.

吸烟者必须从某天开始突然戒烟，从一天一包烟到再也不抽烟。

youdao

In turn the current exploiting of the flaw is known as a "zero-day" attack.

所以说，现在利用这一漏洞进行的攻击被称为“零日”攻击。

youdao

Word was circulating in Geekville that the Stuxnet worm exploited four zero day errors.

FORBES: Dim Reading in Geekville

Look for advanced protection technology that proactively protects against zero day exploits or recognizes lateral movement within a network and blocks it.

FORBES: Is Your IT Posture That Of A Protector, Detective, or Warrior?

According to Crosby, traditional security solutions rely on detection and hence fail to block targeted attacks which often use zero day exploits.

FORBES: Bromium Wants You To Forget About Security