exfiltration

nouncandidate·updated Oct 7, 2026

GlossaryL1 — what DictionaryL2 — how used ThesaurusL3 — relations Universaleverything

The unauthorized transfer of information from an information system.

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

Senses

1 more sense beyond the canonical

SEC IM Guidance Update: Cybersecurity Guidance, No. 2015-02

The unauthorized file transfer or other bulk data transfer that creates a security breach by allowing malicious people outside a security perimeter access to confidential information.

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: exfiltrations
possessive: exfiltration's
pluralpossessive: exfiltrations'

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