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Breaches.

Wisconsin Historical Society

Disclosed Jan 17, 20206 years ago2,206 affectedConfirmed

Official notice

What is known

People affected2,206 (as reported by the organization)
DisclosedJan 17, 2020
HappenedJun 8, 2019
AttackNot stated
Data exposedNames
SectorNonprofit · US
StatusConfirmed

Sources

Source
Indiana Attorney General 2020 data breach report: Wisconsin Historical Societyin.gov · Official notice
Maine Attorney General breach notice archive: Wisconsin Historical Societymaine.gov · Official notice

Notices filed

WhereFiledPeople
Maine AGresidents of MEJan 17, 20201
Indiana AGresidents of INJan 21, 202019
History of this record
  • 2026-09-25 · data_types: [] to ["names"] · backfill source
  • 2026-09-25 · disclosed: 2020-01-21 to 2020-01-17 · backfill source
  • 2026-09-25 · added · backfill source

First seen 2026-09-25 (Indiana AG), confirmed by Indiana AG. Record counts are as reported. Not legal advice.

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