Nounverified· unreviewed MWEverified· unreviewed

data breach

nounverified· unreviewed·updated Oct 7, 2026

GlossaryL1 — what DictionaryL2 — how used ThesaurusL3 — relations Universaleverything

The unauthorized movement or disclosure of sensitive information to a party, usually outside the organization, that is not authorized to have or see the information.

MWENational Initiative for Cybersecurity Careers and Studies (NICCS) Cybersecurity Lexicon

Classifications

per-axis with provenance

Entity Type

Event100%manual reviewI-079.event_restored

Ddorianclast reviewed —

Event is a type again; Triggering Event is an Event that obliges a response (Dorian, 2026-10-07; cki DESIGN.md I-079)

Sensitivity

Regulated85%llm-generatedllm:claude-haiku-4-5

?unassignedlast reviewed —

Information Class

—60%llm-generatedllm:claude-haiku-4-5

?unassignedlast reviewed —

Variants

3 surface forms

plural: data breaches
possessive: data breach's
pluralpossessive: data breaches'

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