Primary definition
The prevention of authorized access to resources or the delaying of time-critical operations. (Time-critical may be milliseconds or it may be hours, depending upon the service provided. (CNSSI-4009) (NISTIR)
Also known asDoS · denial-of-service · network flood attack · resource exhaustion attack · service disruption attack
3 sources cited4 related termsReviewed Aug 9, 2026
— The State and Local Election Cybersecurity PlaybookView source
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TSLECP
The prevention of authorized access to resources or the delaying of time-critical operations. (Time-critical may be milliseconds or it may be hours, depending upon the service provided. (CNSSI-4009) (NISTIR)
The State and Local Election Cybersecurity Playbook · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Denial Of Service (dos). In Election Security Glossary. Retrieved August 20, 2026, from https://electionsecurityglossary.com/glossary/denial-of-service-dos
Sources
3 cited · last checked Aug 9, 2026
01
The State and Local Election Cybersecurity Playbook
The State and Local Election Cybersecurity Playbook
High consensus
02
Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015
Multi-source
03
The Cyber Glossary
The Cyber Glossary
Multi-source
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