Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Pierce County Library System

Disclosed Jun 20, 2025340,101 affectedConfirmed

Official notice

What is known

People affected340,101 (as reported by the organization)
DisclosedJun 20, 2025
DiscoveredApr 14, 2025
HappenedApr 15, 2025
AttackHacking
Data exposedNot stated
SectorGovernment · US
StatusConfirmed

Sources

Official noticeatg.wa.gov
Washington Attorney General breach notice: Pierce County Library System
Official noticeago.vermont.gov
Vermont Attorney General: 2025-12-09 Pierce County Library System Data Breach Notice to Consumers
Official noticein.gov
Indiana Attorney General 2025 data breach report: Pierce County Library System

Notices filed

Residents of WAJun 20, 2025
Washington AG336,826 people
Residents of VTDec 9, 2025
Vermont AGCount not stated
Residents of INDec 9, 2025
Indiana AG10 people
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 340101by backfillSource
source2026-09-25
empty to https://ago.vermont.gov/document/2025-12-09-pierce-county-library-system-data-breach-notice-consumersby backfillSource
Added2026-09-25
First recordedby backfillSource

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

Everything about Pierce County Library System