Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Stride

Disclosed Dec 1, 202013,740 affectedConfirmed

Official notice

What is known

People affected13,740 (as reported by the organization)
DisclosedDec 1, 2020
DiscoveredNov 11, 2020
HappenedNov 4, 2020
AttackRansomware
Data exposedNot stated
SectorOther · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Stride
Official noticeatg.wa.gov
Washington Attorney General breach notice: Stride
Official noticejustice.oregon.gov
Oregon DOJ breach notice: Stride
Official noticein.gov
Indiana Attorney General 2021 data breach report: Stride

Notices filed

Residents of WADec 1, 2020
Washington AG742 people
Residents of INJun 11, 2021
Indiana AG334 people
Residents of CAJul 6, 2021
California AGCount not stated
Residents of ORJul 6, 2021
Oregon DOJ23,361 people
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 13740by backfillSource
attack2026-09-25
unknown to ransomwareby backfillSource
disclosed2026-09-25
2021-07-06 to 2020-12-01by backfillSource
discovered2026-09-25
empty to 2020-11-11by 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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