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(ISC)2

CERTIFIED-IN-CYBERSECURITY · Question #44

In incident terminology, the meaning of Zero Day is:

The correct answer is D. A previously unknown system vulnerability. A 'Zero Day' is an unknown system vulnerability that can be exploited since it does not yet exist in any vulnerability database. Moreover, these vulnerabilities do not generally fit recognized patterns, signatures or methods (see ISC2 Study Guide Chapter 2, Module 1, under Incide

Security Principles

Question

In incident terminology, the meaning of Zero Day is:

Options

  • ADays with a cybersecurity incident
  • BDays without a cybersecurity incident
  • CDays to solve a previously unknown system vulnerability
  • DA previously unknown system vulnerability

How the community answered

(26 responses)
  • A
    4% (1)
  • C
    4% (1)
  • D
    92% (24)

Explanation

A 'Zero Day' is an unknown system vulnerability that can be exploited since it does not yet exist in any vulnerability database. Moreover, these vulnerabilities do not generally fit recognized patterns, signatures or methods (see ISC2 Study Guide Chapter 2, Module 1, under Incident Terminology), making them very hard to detect and prevent.

Topics

#Zero Day#Vulnerability#Cybersecurity Terminology#Threats

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