Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

American Council for International Studies

Disclosed Dec 3, 202142,427 affectedConfirmed

Official notice

What is known

People affected42,427 (as reported by the organization)
DisclosedDec 3, 2021
DiscoveredJun 10, 2021
HappenedMay 25, 2021
AttackHacking
Data exposedNot stated
SectorNonprofit · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: American Council for International Studies
Official noticeatg.wa.gov
Washington Attorney General breach notice: American Council for International Studies
Official noticejustice.oregon.gov
Oregon DOJ breach notice: American Council for International Studies
Official noticein.gov
Indiana Attorney General 2021 data breach report: American Council for International Studies

Notices filed

Residents of CADec 3, 2021
California AGCount not stated
Residents of WADec 3, 2021
Washington AG3,712 people
Residents of ORDec 3, 2021
Oregon DOJ42,430 people
Residents of INDec 3, 2021
Indiana AG559 people
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 42427by backfillSource
attack2026-09-25
unknown to hackingby backfillSource
discovered2026-09-25
empty to 2021-06-10by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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