Primary definition
the proactive practice of protecting networks, devices, and data from unauthorized access or criminal activity through monitoring, detection, and response.
Also known ascybersecurity defense · cyber security defense · cyberdefense · cyber defence · cybersecurity defence · cyber security defence · CD
2 sources cited4 related termsReviewed Aug 10, 2026
— NICCS GlossaryView source
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NICCS
the proactive practice of protecting networks, devices, and data from unauthorized access or criminal activity through monitoring, detection, and response.
NICCS Glossary · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Cyber Defense. In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/cyber-defense
Sources
2 cited · last checked Aug 10, 2026
01
NICCS Glossary
NICCS Glossary
High consensus
02
ODNI Cyber Threats to Elections Lexicon
ODNI Cyber Threats to Elections Lexicon
Disputed
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