Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Cupertino Electric

Disclosed Jul 28, 202324,684 affectedConfirmed

Official notice

What is known

People affected24,684 (as reported by the organization)
DisclosedJul 28, 2023
DiscoveredJun 24, 2023
HappenedJun 14, 2023
AttackRansomware
Data exposedNot stated
SectorEnergy · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Cupertino Electric
Official noticeatg.wa.gov
Washington Attorney General breach notice: Cupertino Electric
Official noticejustice.oregon.gov
Oregon DOJ breach notice: Cupertino Electric
Official noticeago.vermont.gov
Vermont Attorney General: 2023-07-28 Cupertino Electric Data Breach Notice to Consumers
Official noticein.gov
Indiana Attorney General 2023 data breach report: Cupertino Electric

Notices filed

Residents of CAJul 28, 2023
California AGCount not stated
Residents of WAJul 28, 2023
Washington AG884 people
Residents of ORJul 28, 2023
Oregon DOJ24,684 people
Residents of VTJul 28, 2023
Vermont AGCount not stated
Residents of INJul 28, 2023
Indiana AG380 people
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 24684by backfillSource
source2026-09-25
empty to https://ago.vermont.gov/document/2023-07-28-cupertino-electric-data-breach-notice-consumersby backfillSource
attack2026-09-25
unknown to ransomwareby backfillSource
discovered2026-09-25
empty to 2023-06-24by 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.

Everything about Cupertino Electric