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incident

nouncandidate·updated May 12, 2026

An occurrence that actually or imminently jeopardizes, without lawful authority, the confidentiality, integrity, or availability of information or an information system or constitutes a violation or imminent threat of violation of law, security policies, security procedures, or acceptable use policies. [20]

polysemousNIST SP 800-172r3

Senses

SANS Glossary of Security Terms

An incident as an adverse network event in an information system or network or the threat of the occurrence of such an event.

National Initiative for Cybersecurity Careers and Studies (NICCS) Cybersecurity Lexiconextended definition available

An occurrence that actually or potentially results in adverse consequences to (adverse effects on) (poses a threat to) an information system or the information that the system processes, stores, or transmits and that may require a response action to mitigate the consequences.

ISACA Cybersecurity Glossary

Any event that is not part of the standard operation of a service and that causes, or may cause, an interruption to, or a reduction in, the quality of that service

NIST Cybersecurity Framework

An event that disrupts the service or operations of an organization.

FFIEC Cybersecurity Assessment Tool, Baseline, May 2017

An assessed occurrence that actually or potentially jeopardizes the confidentiality, integrity, or availability of an information system; or the information the system processes, stores, or transmits; or that constitutes a violation or imminent threat of violation of security policies, security procedures, or acceptable use policies.

NISTIR 7298: Glossary of Key Information Security Terms, Revision 2

A violation or imminent threat of violation of computer security policies, acceptable use policies, or standard security practices.

NIST SP 800-53

An occurrence that actually or potentially jeopardizes the confidentiality, integrity, or availability of an information system or the information the system processes, stores, or transmits or that constitutes a violation or imminent threat of violation of security policies, security procedures, or acceptable use policies.

What is an AI incident?

a situation in which AI systems caused, or nearly caused, real-world harm.

Editor's Guide

an alleged harm or near harm event to people, property, or the environment where an AI system is implicated.

Definitions

the occurrence of a technical event that affects the integrity of a Product and/or Model.

Artificial Intelligence Based Model for Incident Response

Adverse event(s) in a computer system or networks caused by a failure of a security mechanism, or an attempted or threatened breach of these mechanisms.

Wordset Dictionary

a single distinct event

Wordset Dictionary

a public disturbance

NIST SP 800-171r3glossary

An occurrence that actually or imminently jeopardizes, without lawful authority, the confidentiality, integrity, or availability of information or an information system; or constitutes a violation or imminent threat of violation of law, security policies, security procedures, or acceptable use policies. [79]

Classifications

Entity Type

Event0%rule-basedmulti_axis_classifier_low_confidence.v1
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Sensitivity

85%llm-generatedllm:claude-haiku-4-5
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Information Class

80%llm-generatedllm:claude-haiku-4-5
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Variants

alternatephrasing
Incident
plural
incidents
possessive
incident's
pluralpossessive
incidents'