Replay attack
nounverified·updated May 9, 2026
The interception of communications, such as an authentication communication, and subsequently impersonation of the sender by retransmitting the intercepted communication.
MWEFederal Financial Institutions Examination Council (FFIEC) IT Examination Handbook Infobase, Glossary
Senses
NISTIR 7298: Glossary of Key Information Security Terms, Revision 2
An attack that involves the capture of transmitted authentication or access control information and its subsequent retransmission with the intent of producing an unauthorized effect or gaining unauthorized access.
NIST SP 800-171r3attested usage pack match
No definition is given in NIST SP 800-171r3. The term is attested in use at 1 citation in that document; a definition is pending curation.
Classifications
Entity Type
Threat95%llm-generatedllm:claude-haiku-4-5
?unassignedlast reviewed —
Sensitivity
unclassified
Information Class
unclassified
Variants
- alternatephrasing
- Replay Attacks
- plural
- Replay attacksReplay Attackses
- possessive
- Replay attack'sReplay Attacks's
- pluralpossessive
- Replay attacks'Replay Attackses'