Spoofing

nouncandidate·updated May 12, 2026

GlossaryL1 — what DictionaryL2 — how used ThesaurusL3 — relations Universaleverything

1. Faking the sending address of a transmission to gain illegal entry into a secure system. Impersonating, masquerading, piggybacking, and mimicking are forms of spoofing. 2. The deliberate inducement of a user or resource to take incorrect action.

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

Senses

5 more senses beyond the canonical

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

Faking the sending address of a transmission to gain illegal [unauthorized] entry into a secure system.

ISACA Cybersecurity Glossary

Faking the sending address of a transmission in order to gain illegal entry into a secure system

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

A form of masquerading where a trusted IP address is used instead of the true IP address as a means of gaining access to a computer system.

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

“IP spoofing” refers to sending a network packet that appears to come from a source other than its actual source.

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

Involves— 1) the ability to receive a message by masquerading as the legitimate receiving destination, or 2) masquerading as the sending machine and sending a message to a destination.

Classifications

per-axis with provenance

Entity Type

Threat0%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

—90%llm-generatedllm:claude-haiku-4-5

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Variants

3 surface forms

plural: Spoofings
possessive: Spoofing's
pluralpossessive: Spoofings'

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