Question

what do you mean by zero day

Answer 1

ANSWER

A zero-day (also known as 0-day) vulnerability is a computer-software ... Malware writers can exploit zero-day vulnerabilities through several different attack vectors. Zero-day vulnerabilities present serious security risks, leaving you susceptible to zero- day attacks, which can result in potential damage

Answer 2

ZERO DAY

A zero-day vulnerability is a computer-software vulnerability that is unknown to, or unaddressed by, those who should be interested in mitigating the vulnerability. Until the vulnerability is mitigated, hackers can exploit it to adversely affect computer programs, data, additional computers or a network.

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