Pierce County Library System
ent_bcfd8b6570804125
Disclosures
8
State AG · Leak Site · 6 jurisdictions
Multi-filing incidents
1
incidents joining 2+ filings here
Max affected reported
340,101
nationwide · State AG ME
Leak-site claims
2
unverified actor claims
Identity resolution
- Canonical name
- Pierce County Library System
- Normalized
- pierce county library system— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- piercecountylibrary.org
Disclosure history (8)newest first
- Maine State AGas victim2026-05-25
Pierce County Library System reported the loss of a device containing PII on 10/5/2025, discovered 05/24/2025. 5,000 Maine residents affected. Notification via telephone on 05/25/2026.
- Massachusetts State AGas victim2025-12-10
Pierce County Library System reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-12-10. 8 Massachusetts residents were affected.
- Vermont State AGas victim2025-12-09
Pierce County Library System experienced unauthorized access to its systems between April 15 and April 21, 2025, during which certain files were copied and taken. The organization secured its systems and investigated the incident. A review completed on October 10, 2025, determined that personal information, including names, was involved. Approximately one Rhode Island resident was affected. The organization is offering complimentary credit monitoring and identity protection services.
- Maine State AGas victim2025-12-09
Pierce County Library System experienced an external system breach (hacking) between April 15 and April 21, 2025. Unauthorized access resulted in the copying and taking of files containing names and Social Security numbers. The breach was discovered on October 10, 2025. Approximately 340,101 individuals were affected nationwide, including 6 Maine residents. Notices were sent on December 9, 2025, offering 12 months of credit monitoring.
- Indiana State AGas victim2025-12-09
Pierce County Library System reported a data breach to the Indiana Attorney General. The breach occurred on 2025-04-15 and was reported on 2025-12-09. 10 Indiana residents were affected. 340,101 individuals affected in total.
- Washington State AGas victim2025-06-20
Supplemental notice from Pierce County Library System (WA) regarding unauthorized access to systems between April 15-21, 2025. Incident discovered April 14, 2025. Affects 336,826 Washington residents. Data exposed includes names, SSNs, financial/medical info, driver's licenses, and DOBs. PCLS notified law enforcement, offered 1-year credit monitoring via IDX, and is implementing additional employee safeguards.
- GLOBALLeak Siteas victim2025-04-21
The Pierce County Library System includes 20 libraries in Pierce county. The libraries offer families and children free access to 1 million books, CDs and films, and numerous programs to help kids read and do their homework
- GLOBALLeak Siteas victim2025-04-18
The Pierce County Library System includes 20 libraries in Pierce county. The libraries offer families and children free access to 1 million books, CDs and films, and numerous programs to help kids read and do their homework