anomalous activity

nounverified·updated Oct 7, 2026

GlossaryL1 — what DictionaryL2 — how used ThesaurusL3 — relations Universaleverything

Any actions that are outside of what is expected, as measured against what "normally" should be happening, occur.

MWENIST Cybersecurity Framework

Senses

1 more sense beyond the canonical

Federal Financial Institutions Examination Council (FFIEC) IT Examination Handbook Infobase, Glossary

Activity that deviates from normal. The result of the process of comparing definitions of what activity is considered normal against observed events to identify significant deviations.

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

unclassified

Information Class

unclassified

Variants

4 surface forms

synonym: anomalous event
plural: anomalous activities
possessive: anomalous activity's
pluralpossessive: anomalous activities'

Continue to:Dictionary →How is this term used per framework?Thesaurus →How does this term relate to other terms?Universal →Everything in one page.