Primary definition
The unauthorized movement or disclosure of sensitive information to a party, usually outside the organization, that is not authorized to have or see that information.
Also known asdata leak · information breach · security breach · cyber breach · DB · infosec breach · unauthorized data exposure
2 sources cited4 related termsReviewed Aug 10, 2026
— March 2020 CSC ReportView source
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M2CR
High consensus
The unauthorized movement or disclosure of sensitive information to a party, usually outside the organization, that is not authorized to have or see that information.
March 2020 CSC Report · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Data Breach. In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/data-breach
Sources
2 cited · last checked Aug 10, 2026
01
March 2020 CSC Report
March 2020 CSC Report
High consensus
02
NICCS Glossary
NICCS Glossary
High consensus
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