Defined term

Zero Day Attack

Zero Day Attack: An attack that exploits a previously unknown hardware, firmware, or software vulnerability.

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Cybersecurity

Definition

An attack that exploits a previously unknown hardware, firmware, or software vulnerability.

Alternative Definitions

Definition 2

A cyber exploit that relies on exploiting an unknown or undisclosed vulnerability in the design or implementation of a system to violate its security.

Source: March 2020 CSC ReportType: external
Definition 3

A cyber exploit that relies on exploiting an unknown or undisclosed vulnerability in the design or implementation of a system to violate its security. SOURCE: Cyberspace Solarium Commission Final Report, 2020

Source: The Cyber GlossaryType: external

Sources

1
Committee on National Security Systems Glossary CNSSI 4009-2015
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2
March 2020 CSC Report
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3
The Cyber Glossary
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